January 2025 - Kernel - mailweb.openeuler.org

[PATCH OLK-5.10] scsi: bfa: Fix use-after-free in bfad_im_module_exit()
by Chen Zhongjin 02 Jan '25

02 Jan '25

From: Ye Bin <yebin10(a)huawei.com> stable inclusion from stable-v5.10.231 commit ef2c2580189ea88a0dcaf56eb3a565763a900edb category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IBEAFA CVE: CVE-2024-53227 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- [ Upstream commit 178b8f38932d635e90f5f0e9af1986c6f4a89271 ] BUG: KASAN: slab-use-after-free in __lock_acquire+0x2aca/0x3a20 Read of size 8 at addr ffff8881082d80c8 by task modprobe/25303 Call Trace: <TASK> dump_stack_lvl+0x95/0xe0 print_report+0xcb/0x620 kasan_report+0xbd/0xf0 __lock_acquire+0x2aca/0x3a20 lock_acquire+0x19b/0x520 _raw_spin_lock+0x2b/0x40 attribute_container_unregister+0x30/0x160 fc_release_transport+0x19/0x90 [scsi_transport_fc] bfad_im_module_exit+0x23/0x60 [bfa] bfad_init+0xdb/0xff0 [bfa] do_one_initcall+0xdc/0x550 do_init_module+0x22d/0x6b0 load_module+0x4e96/0x5ff0 init_module_from_file+0xcd/0x130 idempotent_init_module+0x330/0x620 __x64_sys_finit_module+0xb3/0x110 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f </TASK> Allocated by task 25303: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 fc_attach_transport+0x4f/0x4740 [scsi_transport_fc] bfad_im_module_init+0x17/0x80 [bfa] bfad_init+0x23/0xff0 [bfa] do_one_initcall+0xdc/0x550 do_init_module+0x22d/0x6b0 load_module+0x4e96/0x5ff0 init_module_from_file+0xcd/0x130 idempotent_init_module+0x330/0x620 __x64_sys_finit_module+0xb3/0x110 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 25303: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 __kasan_slab_free+0x38/0x50 kfree+0x212/0x480 bfad_im_module_init+0x7e/0x80 [bfa] bfad_init+0x23/0xff0 [bfa] do_one_initcall+0xdc/0x550 do_init_module+0x22d/0x6b0 load_module+0x4e96/0x5ff0 init_module_from_file+0xcd/0x130 idempotent_init_module+0x330/0x620 __x64_sys_finit_module+0xb3/0x110 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f Above issue happens as follows: bfad_init error = bfad_im_module_init() fc_release_transport(bfad_im_scsi_transport_template); if (error) goto ext; ext: bfad_im_module_exit(); fc_release_transport(bfad_im_scsi_transport_template); --> Trigger double release Don't call bfad_im_module_exit() if bfad_im_module_init() failed. Fixes: 7725ccfda597 ("[SCSI] bfa: Brocade BFA FC SCSI driver") Signed-off-by: Ye Bin <yebin10(a)huawei.com> Link: https://lore.kernel.org/r/20241023011809.63466-1-yebin@huaweicloud.com Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Chen Zhongjin <chenzhongjin(a)huawei.com> --- drivers/scsi/bfa/bfad.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c index 440ef32be048..45b5f83ad6da 100644 --- a/drivers/scsi/bfa/bfad.c +++ b/drivers/scsi/bfa/bfad.c @@ -1705,9 +1705,8 @@ bfad_init(void) error = bfad_im_module_init(); if (error) { - error = -ENOMEM; printk(KERN_WARNING "bfad_im_module_init failure\n"); - goto ext; + return -ENOMEM; } if (strcmp(FCPI_NAME, " fcpim") == 0) -- 2.25.1

2 1

[PATCH OLK-5.10] f2fs: fix null-ptr-deref in f2fs_submit_page_bio()
by Chen Zhongjin 02 Jan '25

02 Jan '25

From: Ye Bin <yebin10(a)huawei.com> mainline inclusion from mainline-v6.13-rc1 commit b7d0a97b28083084ebdd8e5c6bccd12e6ec18faa category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IBEAFK CVE: CVE-2024-53221 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- There's issue as follows when concurrently installing the f2fs.ko module and mounting the f2fs file system: KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] RIP: 0010:__bio_alloc+0x2fb/0x6c0 [f2fs] Call Trace: <TASK> f2fs_submit_page_bio+0x126/0x8b0 [f2fs] __get_meta_page+0x1d4/0x920 [f2fs] get_checkpoint_version.constprop.0+0x2b/0x3c0 [f2fs] validate_checkpoint+0xac/0x290 [f2fs] f2fs_get_valid_checkpoint+0x207/0x950 [f2fs] f2fs_fill_super+0x1007/0x39b0 [f2fs] mount_bdev+0x183/0x250 legacy_get_tree+0xf4/0x1e0 vfs_get_tree+0x88/0x340 do_new_mount+0x283/0x5e0 path_mount+0x2b2/0x15b0 __x64_sys_mount+0x1fe/0x270 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e Above issue happens as the biset of the f2fs file system is not initialized before register "f2fs_fs_type". To address above issue just register "f2fs_fs_type" at the last in init_f2fs_fs(). Ensure that all f2fs file system resources are initialized. Fixes: f543805fcd60 ("f2fs: introduce private bioset") Signed-off-by: Ye Bin <yebin10(a)huawei.com> Reviewed-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> Conflicts: fs/f2fs/super.c [Conflict caused by commit 4d9a2bb1a6ba has not been merged] Signed-off-by: Chen Zhongjin <chenzhongjin(a)huawei.com> --- fs/f2fs/super.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 42d18166f10a..28f8b88a59ea 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -4116,9 +4116,6 @@ static int __init init_f2fs_fs(void) err = register_shrinker(&f2fs_shrinker_info); if (err) goto free_sysfs; - err = register_filesystem(&f2fs_fs_type); - if (err) - goto free_shrinker; f2fs_create_root_stats(); err = f2fs_init_post_read_processing(); if (err) @@ -4135,7 +4132,12 @@ static int __init init_f2fs_fs(void) err = f2fs_init_compress_cache(); if (err) goto free_compress_mempool; + err = register_filesystem(&f2fs_fs_type); + if (err) + goto free_compress_cache; return 0; +free_compress_cache: + f2fs_destroy_compress_cache(); free_compress_mempool: f2fs_destroy_compress_mempool(); free_bioset: @@ -4146,8 +4148,6 @@ static int __init init_f2fs_fs(void) f2fs_destroy_post_read_processing(); free_root_stats: f2fs_destroy_root_stats(); - unregister_filesystem(&f2fs_fs_type); -free_shrinker: unregister_shrinker(&f2fs_shrinker_info); free_sysfs: f2fs_exit_sysfs(); @@ -4171,13 +4171,13 @@ static int __init init_f2fs_fs(void) static void __exit exit_f2fs_fs(void) { + unregister_filesystem(&f2fs_fs_type); f2fs_destroy_compress_cache(); f2fs_destroy_compress_mempool(); f2fs_destroy_bioset(); f2fs_destroy_bio_entry_cache(); f2fs_destroy_post_read_processing(); f2fs_destroy_root_stats(); - unregister_filesystem(&f2fs_fs_type); unregister_shrinker(&f2fs_shrinker_info); f2fs_exit_sysfs(); f2fs_destroy_garbage_collection_cache(); -- 2.25.1

2 1

[PATCH OLK-6.6 V1] netfilter: nft_inner: incorrect percpu area handling under softirq
by Cheng Yu 02 Jan '25

02 Jan '25

From: Pablo Neira Ayuso <pablo(a)netfilter.org> stable inclusion from stable-v6.6.66 commit 53c7314208c865086d78b4e88da53bc33da0b603 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IBEAOQ CVE: CVE-2024-56638 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- [ Upstream commit 7b1d83da254be3bf054965c8f3b1ad976f460ae5 ] Softirq can interrupt ongoing packet from process context that is walking over the percpu area that contains inner header offsets. Disable bh and perform three checks before restoring the percpu inner header offsets to validate that the percpu area is valid for this skbuff: 1) If the NFT_PKTINFO_INNER_FULL flag is set on, then this skbuff has already been parsed before for inner header fetching to register. 2) Validate that the percpu area refers to this skbuff using the skbuff pointer as a cookie. If there is a cookie mismatch, then this skbuff needs to be parsed again. 3) Finally, validate if the percpu area refers to this tunnel type. Only after these three checks the percpu area is restored to a on-stack copy and bh is enabled again. After inner header fetching, the on-stack copy is stored back to the percpu area. Fixes: 3a07327d10a0 ("netfilter: nft_inner: support for inner tunnel header matching") Reported-by: syzbot+84d0441b9860f0d63285(a)syzkaller.appspotmail.com Signed-off-by: Pablo Neira Ayuso <pablo(a)netfilter.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Cheng Yu <serein.chengyu(a)huawei.com> --- include/net/netfilter/nf_tables_core.h | 1 + net/netfilter/nft_inner.c | 57 ++++++++++++++++++++------ 2 files changed, 46 insertions(+), 12 deletions(-) diff --git a/include/net/netfilter/nf_tables_core.h b/include/net/netfilter/nf_tables_core.h index 780a5f6ad4a6..16855c2a03f8 100644 --- a/include/net/netfilter/nf_tables_core.h +++ b/include/net/netfilter/nf_tables_core.h @@ -161,6 +161,7 @@ enum { }; struct nft_inner_tun_ctx { + unsigned long cookie; u16 type; u16 inner_tunoff; u16 inner_lloff; diff --git a/net/netfilter/nft_inner.c b/net/netfilter/nft_inner.c index 928312d01eb1..817ab978d24a 100644 --- a/net/netfilter/nft_inner.c +++ b/net/netfilter/nft_inner.c @@ -210,35 +210,66 @@ static int nft_inner_parse(const struct nft_inner *priv, struct nft_pktinfo *pkt, struct nft_inner_tun_ctx *tun_ctx) { - struct nft_inner_tun_ctx ctx = {}; u32 off = pkt->inneroff; if (priv->flags & NFT_INNER_HDRSIZE && - nft_inner_parse_tunhdr(priv, pkt, &ctx, &off) < 0) + nft_inner_parse_tunhdr(priv, pkt, tun_ctx, &off) < 0) return -1; if (priv->flags & (NFT_INNER_LL | NFT_INNER_NH)) { - if (nft_inner_parse_l2l3(priv, pkt, &ctx, off) < 0) + if (nft_inner_parse_l2l3(priv, pkt, tun_ctx, off) < 0) return -1; } else if (priv->flags & NFT_INNER_TH) { - ctx.inner_thoff = off; - ctx.flags |= NFT_PAYLOAD_CTX_INNER_TH; + tun_ctx->inner_thoff = off; + tun_ctx->flags |= NFT_PAYLOAD_CTX_INNER_TH; } - *tun_ctx = ctx; tun_ctx->type = priv->type; + tun_ctx->cookie = (unsigned long)pkt->skb; pkt->flags |= NFT_PKTINFO_INNER_FULL; return 0; } +static bool nft_inner_restore_tun_ctx(const struct nft_pktinfo *pkt, + struct nft_inner_tun_ctx *tun_ctx) +{ + struct nft_inner_tun_ctx *this_cpu_tun_ctx; + + local_bh_disable(); + this_cpu_tun_ctx = this_cpu_ptr(&nft_pcpu_tun_ctx); + if (this_cpu_tun_ctx->cookie != (unsigned long)pkt->skb) { + local_bh_enable(); + return false; + } + *tun_ctx = *this_cpu_tun_ctx; + local_bh_enable(); + + return true; +} + +static void nft_inner_save_tun_ctx(const struct nft_pktinfo *pkt, + const struct nft_inner_tun_ctx *tun_ctx) +{ + struct nft_inner_tun_ctx *this_cpu_tun_ctx; + + local_bh_disable(); + this_cpu_tun_ctx = this_cpu_ptr(&nft_pcpu_tun_ctx); + if (this_cpu_tun_ctx->cookie != tun_ctx->cookie) + *this_cpu_tun_ctx = *tun_ctx; + local_bh_enable(); +} + static bool nft_inner_parse_needed(const struct nft_inner *priv, const struct nft_pktinfo *pkt, - const struct nft_inner_tun_ctx *tun_ctx) + struct nft_inner_tun_ctx *tun_ctx) { if (!(pkt->flags & NFT_PKTINFO_INNER_FULL)) return true; + if (!nft_inner_restore_tun_ctx(pkt, tun_ctx)) + return true; + if (priv->type != tun_ctx->type) return true; @@ -248,27 +279,29 @@ static bool nft_inner_parse_needed(const struct nft_inner *priv, static void nft_inner_eval(const struct nft_expr *expr, struct nft_regs *regs, const struct nft_pktinfo *pkt) { - struct nft_inner_tun_ctx *tun_ctx = this_cpu_ptr(&nft_pcpu_tun_ctx); const struct nft_inner *priv = nft_expr_priv(expr); + struct nft_inner_tun_ctx tun_ctx = {}; if (nft_payload_inner_offset(pkt) < 0) goto err; - if (nft_inner_parse_needed(priv, pkt, tun_ctx) && - nft_inner_parse(priv, (struct nft_pktinfo *)pkt, tun_ctx) < 0) + if (nft_inner_parse_needed(priv, pkt, &tun_ctx) && + nft_inner_parse(priv, (struct nft_pktinfo *)pkt, &tun_ctx) < 0) goto err; switch (priv->expr_type) { case NFT_INNER_EXPR_PAYLOAD: - nft_payload_inner_eval((struct nft_expr *)&priv->expr, regs, pkt, tun_ctx); + nft_payload_inner_eval((struct nft_expr *)&priv->expr, regs, pkt, &tun_ctx); break; case NFT_INNER_EXPR_META: - nft_meta_inner_eval((struct nft_expr *)&priv->expr, regs, pkt, tun_ctx); + nft_meta_inner_eval((struct nft_expr *)&priv->expr, regs, pkt, &tun_ctx); break; default: WARN_ON_ONCE(1); goto err; } + nft_inner_save_tun_ctx(pkt, &tun_ctx); + return; err: regs->verdict.code = NFT_BREAK; -- 2.25.1

2 1

[PATCH OLK-5.10 V1] sched/task_stack: fix object_is_on_stack() for KASAN tagged pointers
by Cheng Yu 02 Jan '25

02 Jan '25

From: Qun-Wei Lin <qun-wei.lin(a)mediatek.com> stable inclusion from stable-v6.11.10 commit fbfe23012cec509dfbe09852019c4e4bb84999d0 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB957H CVE: CVE-2024-53128 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- commit fd7b4f9f46d46acbc7af3a439bb0d869efdc5c58 upstream. When CONFIG_KASAN_SW_TAGS and CONFIG_KASAN_STACK are enabled, the object_is_on_stack() function may produce incorrect results due to the presence of tags in the obj pointer, while the stack pointer does not have tags. This discrepancy can lead to incorrect stack object detection and subsequently trigger warnings if CONFIG_DEBUG_OBJECTS is also enabled. Example of the warning: ODEBUG: object 3eff800082ea7bb0 is NOT on stack ffff800082ea0000, but annotated. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at lib/debugobjects.c:557 __debug_object_init+0x330/0x364 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.0-rc5 #4 Hardware name: linux,dummy-virt (DT) pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __debug_object_init+0x330/0x364 lr : __debug_object_init+0x330/0x364 sp : ffff800082ea7b40 x29: ffff800082ea7b40 x28: 98ff0000c0164518 x27: 98ff0000c0164534 x26: ffff800082d93ec8 x25: 0000000000000001 x24: 1cff0000c00172a0 x23: 0000000000000000 x22: ffff800082d93ed0 x21: ffff800081a24418 x20: 3eff800082ea7bb0 x19: efff800000000000 x18: 0000000000000000 x17: 00000000000000ff x16: 0000000000000047 x15: 206b63617473206e x14: 0000000000000018 x13: ffff800082ea7780 x12: 0ffff800082ea78e x11: 0ffff800082ea790 x10: 0ffff800082ea79d x9 : 34d77febe173e800 x8 : 34d77febe173e800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : feff800082ea74b8 x4 : ffff800082870a90 x3 : ffff80008018d3c4 x2 : 0000000000000001 x1 : ffff800082858810 x0 : 0000000000000050 Call trace: __debug_object_init+0x330/0x364 debug_object_init_on_stack+0x30/0x3c schedule_hrtimeout_range_clock+0xac/0x26c schedule_hrtimeout+0x1c/0x30 wait_task_inactive+0x1d4/0x25c kthread_bind_mask+0x28/0x98 init_rescuer+0x1e8/0x280 workqueue_init+0x1a0/0x3cc kernel_init_freeable+0x118/0x200 kernel_init+0x28/0x1f0 ret_from_fork+0x10/0x20 ---[ end trace 0000000000000000 ]--- ODEBUG: object 3eff800082ea7bb0 is NOT on stack ffff800082ea0000, but annotated. ------------[ cut here ]------------ Link: https://lkml.kernel.org/r/20241113042544.19095-1-qun-wei.lin@mediatek.com Signed-off-by: Qun-Wei Lin <qun-wei.lin(a)mediatek.com> Cc: Andrew Yang <andrew.yang(a)mediatek.com> Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno(a)collabora.com> Cc: Casper Li <casper.li(a)mediatek.com> Cc: Catalin Marinas <catalin.marinas(a)arm.com> Cc: Chinwen Chang <chinwen.chang(a)mediatek.com> Cc: Kent Overstreet <kent.overstreet(a)linux.dev> Cc: Matthias Brugger <matthias.bgg(a)gmail.com> Cc: Pasha Tatashin <pasha.tatashin(a)soleen.com> Cc: Shakeel Butt <shakeel.butt(a)linux.dev> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: include/linux/sched/task_stack.h [Context conflict caused by commit f6120d527b861("task_stack.h: add missing include") has not been merged.] Signed-off-by: Cheng Yu <serein.chengyu(a)huawei.com> --- include/linux/sched/task_stack.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/sched/task_stack.h b/include/linux/sched/task_stack.h index 879a5c8f930b..547d7cc9097e 100644 --- a/include/linux/sched/task_stack.h +++ b/include/linux/sched/task_stack.h @@ -8,6 +8,7 @@ #include <linux/sched.h> #include <linux/magic.h> +#include <linux/kasan.h> #ifdef CONFIG_THREAD_INFO_IN_TASK @@ -86,6 +87,7 @@ static inline int object_is_on_stack(const void *obj) { void *stack = task_stack_page(current); + obj = kasan_reset_tag(obj); return (obj >= stack) && (obj < (stack + THREAD_SIZE)); } -- 2.25.1

2 1

[PATCH OLK-6.6 V1] sched/task_stack: fix object_is_on_stack() for KASAN tagged pointers
by Cheng Yu 02 Jan '25

02 Jan '25

From: Qun-Wei Lin <qun-wei.lin(a)mediatek.com> stable inclusion from stable-v6.11.10 commit fbfe23012cec509dfbe09852019c4e4bb84999d0 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB957H CVE: CVE-2024-53128 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- commit fd7b4f9f46d46acbc7af3a439bb0d869efdc5c58 upstream. When CONFIG_KASAN_SW_TAGS and CONFIG_KASAN_STACK are enabled, the object_is_on_stack() function may produce incorrect results due to the presence of tags in the obj pointer, while the stack pointer does not have tags. This discrepancy can lead to incorrect stack object detection and subsequently trigger warnings if CONFIG_DEBUG_OBJECTS is also enabled. Example of the warning: ODEBUG: object 3eff800082ea7bb0 is NOT on stack ffff800082ea0000, but annotated. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at lib/debugobjects.c:557 __debug_object_init+0x330/0x364 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.0-rc5 #4 Hardware name: linux,dummy-virt (DT) pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __debug_object_init+0x330/0x364 lr : __debug_object_init+0x330/0x364 sp : ffff800082ea7b40 x29: ffff800082ea7b40 x28: 98ff0000c0164518 x27: 98ff0000c0164534 x26: ffff800082d93ec8 x25: 0000000000000001 x24: 1cff0000c00172a0 x23: 0000000000000000 x22: ffff800082d93ed0 x21: ffff800081a24418 x20: 3eff800082ea7bb0 x19: efff800000000000 x18: 0000000000000000 x17: 00000000000000ff x16: 0000000000000047 x15: 206b63617473206e x14: 0000000000000018 x13: ffff800082ea7780 x12: 0ffff800082ea78e x11: 0ffff800082ea790 x10: 0ffff800082ea79d x9 : 34d77febe173e800 x8 : 34d77febe173e800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : feff800082ea74b8 x4 : ffff800082870a90 x3 : ffff80008018d3c4 x2 : 0000000000000001 x1 : ffff800082858810 x0 : 0000000000000050 Call trace: __debug_object_init+0x330/0x364 debug_object_init_on_stack+0x30/0x3c schedule_hrtimeout_range_clock+0xac/0x26c schedule_hrtimeout+0x1c/0x30 wait_task_inactive+0x1d4/0x25c kthread_bind_mask+0x28/0x98 init_rescuer+0x1e8/0x280 workqueue_init+0x1a0/0x3cc kernel_init_freeable+0x118/0x200 kernel_init+0x28/0x1f0 ret_from_fork+0x10/0x20 ---[ end trace 0000000000000000 ]--- ODEBUG: object 3eff800082ea7bb0 is NOT on stack ffff800082ea0000, but annotated. ------------[ cut here ]------------ Link: https://lkml.kernel.org/r/20241113042544.19095-1-qun-wei.lin@mediatek.com Signed-off-by: Qun-Wei Lin <qun-wei.lin(a)mediatek.com> Cc: Andrew Yang <andrew.yang(a)mediatek.com> Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno(a)collabora.com> Cc: Casper Li <casper.li(a)mediatek.com> Cc: Catalin Marinas <catalin.marinas(a)arm.com> Cc: Chinwen Chang <chinwen.chang(a)mediatek.com> Cc: Kent Overstreet <kent.overstreet(a)linux.dev> Cc: Matthias Brugger <matthias.bgg(a)gmail.com> Cc: Pasha Tatashin <pasha.tatashin(a)soleen.com> Cc: Shakeel Butt <shakeel.butt(a)linux.dev> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: include/linux/sched/task_stack.h [Context conflict caused by commit f6120d527b861("task_stack.h: add missing include") has not been merged.] Signed-off-by: Cheng Yu <serein.chengyu(a)huawei.com> --- include/linux/sched/task_stack.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/sched/task_stack.h b/include/linux/sched/task_stack.h index f158b025c175..d2117e1c8fa5 100644 --- a/include/linux/sched/task_stack.h +++ b/include/linux/sched/task_stack.h @@ -8,6 +8,7 @@ #include <linux/sched.h> #include <linux/magic.h> +#include <linux/kasan.h> #ifdef CONFIG_THREAD_INFO_IN_TASK @@ -88,6 +89,7 @@ static inline int object_is_on_stack(const void *obj) { void *stack = task_stack_page(current); + obj = kasan_reset_tag(obj); return (obj >= stack) && (obj < (stack + THREAD_SIZE)); } -- 2.25.1

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[PATCH openEuler-22.03-LTS-SP1 V1] sched/task_stack: fix object_is_on_stack() for KASAN tagged pointers
by Cheng Yu 02 Jan '25

02 Jan '25

From: Qun-Wei Lin <qun-wei.lin(a)mediatek.com> stable inclusion from stable-v6.11.10 commit fbfe23012cec509dfbe09852019c4e4bb84999d0 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB957H CVE: CVE-2024-53128 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- commit fd7b4f9f46d46acbc7af3a439bb0d869efdc5c58 upstream. When CONFIG_KASAN_SW_TAGS and CONFIG_KASAN_STACK are enabled, the object_is_on_stack() function may produce incorrect results due to the presence of tags in the obj pointer, while the stack pointer does not have tags. This discrepancy can lead to incorrect stack object detection and subsequently trigger warnings if CONFIG_DEBUG_OBJECTS is also enabled. Example of the warning: ODEBUG: object 3eff800082ea7bb0 is NOT on stack ffff800082ea0000, but annotated. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at lib/debugobjects.c:557 __debug_object_init+0x330/0x364 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.0-rc5 #4 Hardware name: linux,dummy-virt (DT) pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __debug_object_init+0x330/0x364 lr : __debug_object_init+0x330/0x364 sp : ffff800082ea7b40 x29: ffff800082ea7b40 x28: 98ff0000c0164518 x27: 98ff0000c0164534 x26: ffff800082d93ec8 x25: 0000000000000001 x24: 1cff0000c00172a0 x23: 0000000000000000 x22: ffff800082d93ed0 x21: ffff800081a24418 x20: 3eff800082ea7bb0 x19: efff800000000000 x18: 0000000000000000 x17: 00000000000000ff x16: 0000000000000047 x15: 206b63617473206e x14: 0000000000000018 x13: ffff800082ea7780 x12: 0ffff800082ea78e x11: 0ffff800082ea790 x10: 0ffff800082ea79d x9 : 34d77febe173e800 x8 : 34d77febe173e800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : feff800082ea74b8 x4 : ffff800082870a90 x3 : ffff80008018d3c4 x2 : 0000000000000001 x1 : ffff800082858810 x0 : 0000000000000050 Call trace: __debug_object_init+0x330/0x364 debug_object_init_on_stack+0x30/0x3c schedule_hrtimeout_range_clock+0xac/0x26c schedule_hrtimeout+0x1c/0x30 wait_task_inactive+0x1d4/0x25c kthread_bind_mask+0x28/0x98 init_rescuer+0x1e8/0x280 workqueue_init+0x1a0/0x3cc kernel_init_freeable+0x118/0x200 kernel_init+0x28/0x1f0 ret_from_fork+0x10/0x20 ---[ end trace 0000000000000000 ]--- ODEBUG: object 3eff800082ea7bb0 is NOT on stack ffff800082ea0000, but annotated. ------------[ cut here ]------------ Link: https://lkml.kernel.org/r/20241113042544.19095-1-qun-wei.lin@mediatek.com Signed-off-by: Qun-Wei Lin <qun-wei.lin(a)mediatek.com> Cc: Andrew Yang <andrew.yang(a)mediatek.com> Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno(a)collabora.com> Cc: Casper Li <casper.li(a)mediatek.com> Cc: Catalin Marinas <catalin.marinas(a)arm.com> Cc: Chinwen Chang <chinwen.chang(a)mediatek.com> Cc: Kent Overstreet <kent.overstreet(a)linux.dev> Cc: Matthias Brugger <matthias.bgg(a)gmail.com> Cc: Pasha Tatashin <pasha.tatashin(a)soleen.com> Cc: Shakeel Butt <shakeel.butt(a)linux.dev> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: include/linux/sched/task_stack.h [Context conflict caused by commit f6120d527b861("task_stack.h: add missing include") has not been merged.] Signed-off-by: Cheng Yu <serein.chengyu(a)huawei.com> --- include/linux/sched/task_stack.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/sched/task_stack.h b/include/linux/sched/task_stack.h index d10150587d81..4424aff0cfce 100644 --- a/include/linux/sched/task_stack.h +++ b/include/linux/sched/task_stack.h @@ -8,6 +8,7 @@ #include <linux/sched.h> #include <linux/magic.h> +#include <linux/kasan.h> #ifdef CONFIG_THREAD_INFO_IN_TASK @@ -86,6 +87,7 @@ static inline int object_is_on_stack(const void *obj) { void *stack = task_stack_page(current); + obj = kasan_reset_tag(obj); return (obj >= stack) && (obj < (stack + THREAD_SIZE)); } -- 2.25.1

2 1

[PATCH OLK-6.6 V1] sched/task_stack: fix object_is_on_stack() for KASAN tagged pointers
by Cheng Yu 02 Jan '25

02 Jan '25

From: Qun-Wei Lin <qun-wei.lin(a)mediatek.com> stable inclusion from stable-v6.11.10 commit fbfe23012cec509dfbe09852019c4e4bb84999d0 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB957H CVE: CVE-2024-53128 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- commit fd7b4f9f46d46acbc7af3a439bb0d869efdc5c58 upstream. When CONFIG_KASAN_SW_TAGS and CONFIG_KASAN_STACK are enabled, the object_is_on_stack() function may produce incorrect results due to the presence of tags in the obj pointer, while the stack pointer does not have tags. This discrepancy can lead to incorrect stack object detection and subsequently trigger warnings if CONFIG_DEBUG_OBJECTS is also enabled. Example of the warning: ODEBUG: object 3eff800082ea7bb0 is NOT on stack ffff800082ea0000, but annotated. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at lib/debugobjects.c:557 __debug_object_init+0x330/0x364 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.0-rc5 #4 Hardware name: linux,dummy-virt (DT) pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __debug_object_init+0x330/0x364 lr : __debug_object_init+0x330/0x364 sp : ffff800082ea7b40 x29: ffff800082ea7b40 x28: 98ff0000c0164518 x27: 98ff0000c0164534 x26: ffff800082d93ec8 x25: 0000000000000001 x24: 1cff0000c00172a0 x23: 0000000000000000 x22: ffff800082d93ed0 x21: ffff800081a24418 x20: 3eff800082ea7bb0 x19: efff800000000000 x18: 0000000000000000 x17: 00000000000000ff x16: 0000000000000047 x15: 206b63617473206e x14: 0000000000000018 x13: ffff800082ea7780 x12: 0ffff800082ea78e x11: 0ffff800082ea790 x10: 0ffff800082ea79d x9 : 34d77febe173e800 x8 : 34d77febe173e800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : feff800082ea74b8 x4 : ffff800082870a90 x3 : ffff80008018d3c4 x2 : 0000000000000001 x1 : ffff800082858810 x0 : 0000000000000050 Call trace: __debug_object_init+0x330/0x364 debug_object_init_on_stack+0x30/0x3c schedule_hrtimeout_range_clock+0xac/0x26c schedule_hrtimeout+0x1c/0x30 wait_task_inactive+0x1d4/0x25c kthread_bind_mask+0x28/0x98 init_rescuer+0x1e8/0x280 workqueue_init+0x1a0/0x3cc kernel_init_freeable+0x118/0x200 kernel_init+0x28/0x1f0 ret_from_fork+0x10/0x20 ---[ end trace 0000000000000000 ]--- ODEBUG: object 3eff800082ea7bb0 is NOT on stack ffff800082ea0000, but annotated. ------------[ cut here ]------------ Link: https://lkml.kernel.org/r/20241113042544.19095-1-qun-wei.lin@mediatek.com Signed-off-by: Qun-Wei Lin <qun-wei.lin(a)mediatek.com> Cc: Andrew Yang <andrew.yang(a)mediatek.com> Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno(a)collabora.com> Cc: Casper Li <casper.li(a)mediatek.com> Cc: Catalin Marinas <catalin.marinas(a)arm.com> Cc: Chinwen Chang <chinwen.chang(a)mediatek.com> Cc: Kent Overstreet <kent.overstreet(a)linux.dev> Cc: Matthias Brugger <matthias.bgg(a)gmail.com> Cc: Pasha Tatashin <pasha.tatashin(a)soleen.com> Cc: Shakeel Butt <shakeel.butt(a)linux.dev> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: include/linux/sched/task_stack.h [Context conflict caused by commit f6120d527b861("task_stack.h: add missing include") has not been merged.] Signed-off-by: Cheng Yu <serein.chengyu(a)huawei.com> --- include/linux/sched/task_stack.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/sched/task_stack.h b/include/linux/sched/task_stack.h index f158b025c175..d2117e1c8fa5 100644 --- a/include/linux/sched/task_stack.h +++ b/include/linux/sched/task_stack.h @@ -8,6 +8,7 @@ #include <linux/sched.h> #include <linux/magic.h> +#include <linux/kasan.h> #ifdef CONFIG_THREAD_INFO_IN_TASK @@ -88,6 +89,7 @@ static inline int object_is_on_stack(const void *obj) { void *stack = task_stack_page(current); + obj = kasan_reset_tag(obj); return (obj >= stack) && (obj < (stack + THREAD_SIZE)); } -- 2.25.1

2 1

[PATCH OLK-6.6] iommufd: Fix out_fput in iommufd_fault_alloc()
by GONG Ruiqi 02 Jan '25

02 Jan '25

From: Nicolin Chen <nicolinc(a)nvidia.com> mainline inclusion from mainline-v6.13-rc2 commit af7f4780514f850322b2959032ecaa96e4b26472 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IBEAOW CVE: CVE-2024-56624 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- As fput() calls the file->f_op->release op, where fault obj and ictx are getting released, there is no need to release these two after fput() one more time, which would result in imbalanced refcounts: refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 48 PID: 2369 at lib/refcount.c:31 refcount_warn_saturate+0x60/0x230 Call trace: refcount_warn_saturate+0x60/0x230 (P) refcount_warn_saturate+0x60/0x230 (L) iommufd_fault_fops_release+0x9c/0xe0 [iommufd] ... VFS: Close: file count is 0 (f_op=iommufd_fops [iommufd]) WARNING: CPU: 48 PID: 2369 at fs/open.c:1507 filp_flush+0x3c/0xf0 Call trace: filp_flush+0x3c/0xf0 (P) filp_flush+0x3c/0xf0 (L) __arm64_sys_close+0x34/0x98 ... imbalanced put on file reference count WARNING: CPU: 48 PID: 2369 at fs/file.c:74 __file_ref_put+0x100/0x138 Call trace: __file_ref_put+0x100/0x138 (P) __file_ref_put+0x100/0x138 (L) __fput_sync+0x4c/0xd0 Drop those two lines to fix the warnings above. Cc: stable(a)vger.kernel.org Fixes: 07838f7fd529 ("iommufd: Add iommufd fault object") Link: https://patch.msgid.link/r/b5651beb3a6b1adeef26fffac24607353bf67ba1.1733212… Signed-off-by: Nicolin Chen <nicolinc(a)nvidia.com> Reviewed-by: Yi Liu <yi.l.liu(a)intel.com> Signed-off-by: Jason Gunthorpe <jgg(a)nvidia.com> Signed-off-by: GONG Ruiqi <gongruiqi1(a)huawei.com> --- drivers/iommu/iommufd/fault.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/iommu/iommufd/fault.c b/drivers/iommu/iommufd/fault.c index 11c70922ec47..f8c8bbf8e457 100644 --- a/drivers/iommu/iommufd/fault.c +++ b/drivers/iommu/iommufd/fault.c @@ -431,8 +431,6 @@ int iommufd_fault_alloc(struct iommufd_ucmd *ucmd) put_unused_fd(fdno); out_fput: fput(filep); - refcount_dec(&fault->obj.users); - iommufd_ctx_put(fault->ictx); out_abort: iommufd_object_abort_and_destroy(ucmd->ictx, &fault->obj); -- 2.25.1

2 1

[PATCH OLK-6.6 0/1] CVE-2024-56546
by Lin Yujun 02 Jan '25

02 Jan '25

Gaosheng Cui (1): drivers: soc: xilinx: add the missing kfree in xlnx_add_cb_for_suspend() drivers/soc/xilinx/xlnx_event_manager.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) -- 2.34.1

2 2

[PATCH OLK-6.6] apparmor: test: Fix memory leak for aa_unpack_strdup()
by Gu Bowen 02 Jan '25

02 Jan '25

From: Jinjie Ruan <ruanjinjie(a)huawei.com> stable inclusion from stable-v6.6.64 commit 2a9b68f2dc6812bd1b8880b5c00e60203d6f61f6 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IBEGGQ CVE: CVE-2024-56741 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 7290f59231910ccba427d441a6e8b8c6f6112448 upstream. The string allocated by kmemdup() in aa_unpack_strdup() is not freed and cause following memory leaks, free them to fix it. unreferenced object 0xffffff80c6af8a50 (size 8): comm "kunit_try_catch", pid 225, jiffies 4294894407 hex dump (first 8 bytes): 74 65 73 74 69 6e 67 00 testing. backtrace (crc 5eab668b): [<0000000001e3714d>] kmemleak_alloc+0x34/0x40 [<000000006e6c7776>] __kmalloc_node_track_caller_noprof+0x300/0x3e0 [<000000006870467c>] kmemdup_noprof+0x34/0x60 [<000000001176bb03>] aa_unpack_strdup+0xd0/0x18c [<000000008ecde918>] policy_unpack_test_unpack_strdup_with_null_name+0xf8/0x3ec [<0000000032ef8f77>] kunit_try_run_case+0x13c/0x3ac [<00000000f3edea23>] kunit_generic_run_threadfn_adapter+0x80/0xec [<00000000adf936cf>] kthread+0x2e8/0x374 [<0000000041bb1628>] ret_from_fork+0x10/0x20 unreferenced object 0xffffff80c2a29090 (size 8): comm "kunit_try_catch", pid 227, jiffies 4294894409 hex dump (first 8 bytes): 74 65 73 74 69 6e 67 00 testing. backtrace (crc 5eab668b): [<0000000001e3714d>] kmemleak_alloc+0x34/0x40 [<000000006e6c7776>] __kmalloc_node_track_caller_noprof+0x300/0x3e0 [<000000006870467c>] kmemdup_noprof+0x34/0x60 [<000000001176bb03>] aa_unpack_strdup+0xd0/0x18c [<0000000046a45c1a>] policy_unpack_test_unpack_strdup_with_name+0xd0/0x3c4 [<0000000032ef8f77>] kunit_try_run_case+0x13c/0x3ac [<00000000f3edea23>] kunit_generic_run_threadfn_adapter+0x80/0xec [<00000000adf936cf>] kthread+0x2e8/0x374 [<0000000041bb1628>] ret_from_fork+0x10/0x20 Cc: stable(a)vger.kernel.org Fixes: 4d944bcd4e73 ("apparmor: add AppArmor KUnit tests for policy unpack") Signed-off-by: Jinjie Ruan <ruanjinjie(a)huawei.com> Signed-off-by: John Johansen <john.johansen(a)canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Gu Bowen <gubowen5(a)huawei.com> --- security/apparmor/policy_unpack_test.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/security/apparmor/policy_unpack_test.c b/security/apparmor/policy_unpack_test.c index 2b8003eb4f46..dd551587fe4a 100644 --- a/security/apparmor/policy_unpack_test.c +++ b/security/apparmor/policy_unpack_test.c @@ -281,6 +281,8 @@ static void policy_unpack_test_unpack_strdup_with_null_name(struct kunit *test) ((uintptr_t)puf->e->start <= (uintptr_t)string) && ((uintptr_t)string <= (uintptr_t)puf->e->end)); KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA); + + kfree(string); } static void policy_unpack_test_unpack_strdup_with_name(struct kunit *test) @@ -296,6 +298,8 @@ static void policy_unpack_test_unpack_strdup_with_name(struct kunit *test) ((uintptr_t)puf->e->start <= (uintptr_t)string) && ((uintptr_t)string <= (uintptr_t)puf->e->end)); KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA); + + kfree(string); } static void policy_unpack_test_unpack_strdup_out_of_bounds(struct kunit *test) @@ -313,6 +317,8 @@ static void policy_unpack_test_unpack_strdup_out_of_bounds(struct kunit *test) KUNIT_EXPECT_EQ(test, size, 0); KUNIT_EXPECT_NULL(test, string); KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, start); + + kfree(string); } static void policy_unpack_test_unpack_nameX_with_null_name(struct kunit *test) -- 2.25.1

2 1