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[PATCH OLK-5.10] net/sched: flower: Fix unable to handle page fault bug in fl_init
by Zhengchao Shao 22 Apr '24

22 Apr '24

hulk inclusion category: bugfix bugzilla: 189807 CVE: NA -------------------------------- The tmplt_reoffload function pointer is of the const type, and the value is assigned to the constant in fl_init. As a result, the following issue occurs. BUG: unable to handle page fault for address: ffffffff98715da0 PF: supervisor write access in kernel mode PF: error_code(0x0003) - permissions violation PGD ec0d067 P4D ec0d067 PUD ec0e063 PMD 800000000e0001e1 Oops: 0003 [#1] SMP PTI CPU: 20 PID: 7533 Comm: tc Kdump: loaded Not tainted 5.10.0+ #40 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 RIP: 0010:fl_init+0xcf/0x100 RSP: 0018:ffffb6e7c0fe7978 EFLAGS: 00010202 RAX: 0000000000000049 RBX: ffff99c6b3580480 RCX: 0000000000000027 RDX: 0000000000000000 RSI: ffffffff98718740 RDI: ffff99c6a359f800 RBP: ffff99c6a359f800 R08: ffff99cfdce1fe50 R09: ffffb6e7c0fe77a0 R10: ffffb6e7c0fe7798 R11: ffffffff9967d5a8 R12: ffff99c6b3580480 R13: ffffb6e7c0fe7b80 R14: 0000000000000001 R15: ffffb6e7c0fe7ab0 FS: 00007fbaef7b1800(0000) GS:ffff99cfdce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff98715da0 CR3: 000000011299c000 CR4: 00000000000006e0 Call Trace: tcf_proto_create.cold+0x66/0x9e tc_new_tfilter+0x611/0xa70 rtnetlink_rcv_msg+0x406/0x560 netlink_rcv_skb+0x64/0x180 rtnetlink_rcv+0x19/0x30 netlink_unicast_kernel+0x7b/0x180 netlink_unicast+0x13d/0x230 netlink_sendmsg+0x432/0x610 __sock_sendmsg+0xc6/0xd0 ____sys_sendmsg+0x1f5/0x380 ___sys_sendmsg+0x82/0xe Fixes: fbc634d37f5a ("net/sched: flower: Fix kabi change") Signed-off-by: Zhengchao Shao <shaozhengchao(a)huawei.com> --- net/sched/cls_api.c | 4 ++-- net/sched/cls_flower.c | 5 +---- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 7801d8c552c9..b6dd697a3d5f 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -1397,8 +1397,8 @@ void tcf_block_put(struct tcf_block *block) EXPORT_SYMBOL(tcf_block_put); -void (* const tmplt_reoffload)(struct tcf_chain *chain, bool add, - flow_setup_cb_t *cb, void *cb_priv); +void (*tmplt_reoffload)(struct tcf_chain *chain, bool add, + flow_setup_cb_t *cb, void *cb_priv); EXPORT_SYMBOL(tmplt_reoffload); static void cls_tmplt_reoffload(struct tcf_chain *chain, bool add, diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c index 3a1c139c426e..d15729328aef 100644 --- a/net/sched/cls_flower.c +++ b/net/sched/cls_flower.c @@ -356,8 +356,6 @@ static int fl_init(struct tcf_proto *tp) rcu_assign_pointer(tp->root, head); idr_init(&head->handle_idr); - tmplt_reoffload = &fl_tmplt_reoffload; - return rhashtable_init(&head->ht, &mask_ht_params); } @@ -596,8 +594,6 @@ static void fl_destroy(struct tcf_proto *tp, bool rtnl_held, __module_get(THIS_MODULE); tcf_queue_work(&head->rwork, fl_destroy_sleepable); - - tmplt_reoffload = NULL; } static void fl_put(struct tcf_proto *tp, void *arg) @@ -3250,6 +3246,7 @@ static struct tcf_proto_ops cls_fl_ops __read_mostly = { static int __init cls_fl_init(void) { + tmplt_reoffload = &fl_tmplt_reoffload; return register_tcf_proto_ops(&cls_fl_ops); } -- 2.34.1

2 1

[PATCH openEuler-1.0-LTS] tty: fix read of tty->pgrp outside of ctrl_lock
by Yi Yang 22 Apr '24

22 Apr '24

From: David Emett <dave(a)sp4m.net> mainline inclusion from mainline-v5.2-rc1 commit cf90c06f8115016fa4a94644a26a4ba093f0055e category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I9IPML CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- The intention was clearly to use the tty_pgrp local variable rather than re-read tty->pgrp outside of ctrl_lock, so do that. This bug was introduced by commit 2812d9e9fd94 ("tty: Combine SIGTTOU/SIGTTIN handling"). Signed-off-by: David Emett <dave(a)sp4m.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yi Yang <yiyang13(a)huawei.com> --- drivers/tty/tty_jobctrl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/tty_jobctrl.c b/drivers/tty/tty_jobctrl.c index 73fdd55c6bef..5a87f6149876 100644 --- a/drivers/tty/tty_jobctrl.c +++ b/drivers/tty/tty_jobctrl.c @@ -44,7 +44,7 @@ int __tty_check_change(struct tty_struct *tty, int sig) tty_pgrp = tty->pgrp; spin_unlock_irqrestore(&tty->ctrl_lock, flags); - if (tty_pgrp && pgrp != tty->pgrp) { + if (tty_pgrp && pgrp != tty_pgrp) { if (is_ignored(sig)) { if (sig == SIGTTIN) ret = -EIO; -- 2.25.1

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[PATCH OLK-5.10] net/sched: flower: Fix unable to handle page fault bug in fl_init
by Zhengchao Shao 22 Apr '24

22 Apr '24

hulk inclusion category: bugfix bugzilla: 189807 CVE: NA -------------------------------- The tmplt_reoffload function pointer is of the const type, and the value is assigned to the constant in fl_init. As a result, the following issue occurs. BUG: unable to handle page fault for address: ffffffff98715da0 PF: supervisor write access in kernel mode PF: error_code(0x0003) - permissions violation PGD ec0d067 P4D ec0d067 PUD ec0e063 PMD 800000000e0001e1 Oops: 0003 [#1] SMP PTI CPU: 20 PID: 7533 Comm: tc Kdump: loaded Not tainted 5.10.0+ #40 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 RIP: 0010:fl_init+0xcf/0x100 RSP: 0018:ffffb6e7c0fe7978 EFLAGS: 00010202 RAX: 0000000000000049 RBX: ffff99c6b3580480 RCX: 0000000000000027 RDX: 0000000000000000 RSI: ffffffff98718740 RDI: ffff99c6a359f800 RBP: ffff99c6a359f800 R08: ffff99cfdce1fe50 R09: ffffb6e7c0fe77a0 R10: ffffb6e7c0fe7798 R11: ffffffff9967d5a8 R12: ffff99c6b3580480 R13: ffffb6e7c0fe7b80 R14: 0000000000000001 R15: ffffb6e7c0fe7ab0 FS: 00007fbaef7b1800(0000) GS:ffff99cfdce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff98715da0 CR3: 000000011299c000 CR4: 00000000000006e0 Call Trace: tcf_proto_create.cold+0x66/0x9e tc_new_tfilter+0x611/0xa70 rtnetlink_rcv_msg+0x406/0x560 netlink_rcv_skb+0x64/0x180 rtnetlink_rcv+0x19/0x30 netlink_unicast_kernel+0x7b/0x180 netlink_unicast+0x13d/0x230 netlink_sendmsg+0x432/0x610 __sock_sendmsg+0xc6/0xd0 ____sys_sendmsg+0x1f5/0x380 ___sys_sendmsg+0x82/0xe Fixes: beb4e9f0ea13 ("net/sched: flower: Fix kabi change") Signed-off-by: Zhengchao Shao <shaozhengchao(a)huawei.com> --- net/sched/cls_api.c | 4 ++-- net/sched/cls_flower.c | 5 +---- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 7801d8c552c9..b6dd697a3d5f 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -1397,8 +1397,8 @@ void tcf_block_put(struct tcf_block *block) EXPORT_SYMBOL(tcf_block_put); -void (* const tmplt_reoffload)(struct tcf_chain *chain, bool add, - flow_setup_cb_t *cb, void *cb_priv); +void (*tmplt_reoffload)(struct tcf_chain *chain, bool add, + flow_setup_cb_t *cb, void *cb_priv); EXPORT_SYMBOL(tmplt_reoffload); static void cls_tmplt_reoffload(struct tcf_chain *chain, bool add, diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c index 3a1c139c426e..d15729328aef 100644 --- a/net/sched/cls_flower.c +++ b/net/sched/cls_flower.c @@ -356,8 +356,6 @@ static int fl_init(struct tcf_proto *tp) rcu_assign_pointer(tp->root, head); idr_init(&head->handle_idr); - tmplt_reoffload = &fl_tmplt_reoffload; - return rhashtable_init(&head->ht, &mask_ht_params); } @@ -596,8 +594,6 @@ static void fl_destroy(struct tcf_proto *tp, bool rtnl_held, __module_get(THIS_MODULE); tcf_queue_work(&head->rwork, fl_destroy_sleepable); - - tmplt_reoffload = NULL; } static void fl_put(struct tcf_proto *tp, void *arg) @@ -3250,6 +3246,7 @@ static struct tcf_proto_ops cls_fl_ops __read_mostly = { static int __init cls_fl_init(void) { + tmplt_reoffload = &fl_tmplt_reoffload; return register_tcf_proto_ops(&cls_fl_ops); } -- 2.34.1

2 1

[PATCH OLK-6.6] media: pvrusb2: fix uaf in pvr2_context_set_notify
by Zhu Wang 22 Apr '24

22 Apr '24

From: Edward Adam Davis <eadavis(a)qq.com> mainline inclusion from mainline-v6.9-rc1 commit 0a0b79ea55de8514e1750884e5fec77f9fdd01ee category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9HK8R CVE: CVE-2024-26875 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- [Syzbot reported] BUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26 CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline] pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272 Freed by task 906: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x105/0x340 mm/slub.c:4409 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline] pvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158 [Analyze] Task A set disconnect_flag = !0, which resulted in Task B's condition being met and releasing mp, leading to this issue. [Fix] Place the disconnect_flag assignment operation after all code in pvr2_context_disconnect() to avoid this issue. Reported-and-tested-by: syzbot+ce750e124675d4599449(a)syzkaller.appspotmail.com Fixes: e5be15c63804 ("V4L/DVB (7711): pvrusb2: Fix race on module unload") Signed-off-by: Edward Adam Davis <eadavis(a)qq.com> Signed-off-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> Signed-off-by: Zhu Wang <wangzhu9(a)huawei.com> --- drivers/media/usb/pvrusb2/pvrusb2-context.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/usb/pvrusb2/pvrusb2-context.c b/drivers/media/usb/pvrusb2/pvrusb2-context.c index 1764674de98b..e93bca93ce4c 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-context.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-context.c @@ -267,9 +267,9 @@ static void pvr2_context_exit(struct pvr2_context *mp) void pvr2_context_disconnect(struct pvr2_context *mp) { pvr2_hdw_disconnect(mp->hdw); - mp->disconnect_flag = !0; if (!pvr2_context_shutok()) pvr2_context_notify(mp); + mp->disconnect_flag = !0; } -- 2.34.1

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[PATCH OLK-5.10] media: pvrusb2: fix uaf in pvr2_context_set_notify
by Zhu Wang 22 Apr '24

22 Apr '24

From: Edward Adam Davis <eadavis(a)qq.com> mainline inclusion from mainline-v6.9-rc1 commit 0a0b79ea55de8514e1750884e5fec77f9fdd01ee category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9HK8R CVE: CVE-2024-26875 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- [Syzbot reported] BUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26 CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline] pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272 Freed by task 906: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x105/0x340 mm/slub.c:4409 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline] pvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158 [Analyze] Task A set disconnect_flag = !0, which resulted in Task B's condition being met and releasing mp, leading to this issue. [Fix] Place the disconnect_flag assignment operation after all code in pvr2_context_disconnect() to avoid this issue. Reported-and-tested-by: syzbot+ce750e124675d4599449(a)syzkaller.appspotmail.com Fixes: e5be15c63804 ("V4L/DVB (7711): pvrusb2: Fix race on module unload") Signed-off-by: Edward Adam Davis <eadavis(a)qq.com> Signed-off-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> Signed-off-by: Zhu Wang <wangzhu9(a)huawei.com> --- drivers/media/usb/pvrusb2/pvrusb2-context.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/usb/pvrusb2/pvrusb2-context.c b/drivers/media/usb/pvrusb2/pvrusb2-context.c index 1764674de98b..e93bca93ce4c 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-context.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-context.c @@ -267,9 +267,9 @@ static void pvr2_context_exit(struct pvr2_context *mp) void pvr2_context_disconnect(struct pvr2_context *mp) { pvr2_hdw_disconnect(mp->hdw); - mp->disconnect_flag = !0; if (!pvr2_context_shutok()) pvr2_context_notify(mp); + mp->disconnect_flag = !0; } -- 2.34.1

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[PATCH OLK-5.10] media: pvrusb2: fix uaf in pvr2_context_set_notify
by Zhu Wang 22 Apr '24

22 Apr '24

From: Edward Adam Davis <eadavis(a)qq.com> [Syzbot reported] BUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26 CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline] pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272 Freed by task 906: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x105/0x340 mm/slub.c:4409 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline] pvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158 [Analyze] Task A set disconnect_flag = !0, which resulted in Task B's condition being met and releasing mp, leading to this issue. [Fix] Place the disconnect_flag assignment operation after all code in pvr2_context_disconnect() to avoid this issue. Reported-and-tested-by: syzbot+ce750e124675d4599449(a)syzkaller.appspotmail.com Fixes: e5be15c63804 ("V4L/DVB (7711): pvrusb2: Fix race on module unload") Signed-off-by: Edward Adam Davis <eadavis(a)qq.com> Signed-off-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> --- drivers/media/usb/pvrusb2/pvrusb2-context.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/usb/pvrusb2/pvrusb2-context.c b/drivers/media/usb/pvrusb2/pvrusb2-context.c index 1764674de98b..e93bca93ce4c 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-context.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-context.c @@ -267,9 +267,9 @@ static void pvr2_context_exit(struct pvr2_context *mp) void pvr2_context_disconnect(struct pvr2_context *mp) { pvr2_hdw_disconnect(mp->hdw); - mp->disconnect_flag = !0; if (!pvr2_context_shutok()) pvr2_context_notify(mp); + mp->disconnect_flag = !0; } -- 2.34.1

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[PATCH openEuler-1.0-LTS] media: pvrusb2: fix uaf in pvr2_context_set_notify
by Zhu Wang 22 Apr '24

22 Apr '24

From: Edward Adam Davis <eadavis(a)qq.com> mainline inclusion from mainline-v6.9-rc1 commit 0a0b79ea55de8514e1750884e5fec77f9fdd01ee category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9HK8R CVE: CVE-2024-26875 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- [Syzbot reported] BUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26 CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline] pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272 Freed by task 906: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x105/0x340 mm/slub.c:4409 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline] pvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158 [Analyze] Task A set disconnect_flag = !0, which resulted in Task B's condition being met and releasing mp, leading to this issue. [Fix] Place the disconnect_flag assignment operation after all code in pvr2_context_disconnect() to avoid this issue. Reported-and-tested-by: syzbot+ce750e124675d4599449(a)syzkaller.appspotmail.com Fixes: e5be15c63804 ("V4L/DVB (7711): pvrusb2: Fix race on module unload") Signed-off-by: Edward Adam Davis <eadavis(a)qq.com> Signed-off-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> Signed-off-by: Zhu Wang <wangzhu9(a)huawei.com> --- drivers/media/usb/pvrusb2/pvrusb2-context.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/usb/pvrusb2/pvrusb2-context.c b/drivers/media/usb/pvrusb2/pvrusb2-context.c index 9236463ba269..89897cb7d29b 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-context.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-context.c @@ -276,9 +276,9 @@ static void pvr2_context_exit(struct pvr2_context *mp) void pvr2_context_disconnect(struct pvr2_context *mp) { pvr2_hdw_disconnect(mp->hdw); - mp->disconnect_flag = !0; if (!pvr2_context_shutok()) pvr2_context_notify(mp); + mp->disconnect_flag = !0; } -- 2.34.1

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[PATCH OLK-5.10] wifi: ath10k: fix NULL pointer dereference in ath10k_wmi_tlv_op_pull_mgmt_tx_compl_ev()
by Ziyang Xuan 22 Apr '24

22 Apr '24

From: Xingyuan Mo <hdthky0(a)gmail.com> stable inclusion from stable-v5.10.214 commit e1dc7aa814a95aeeb1b2c05be2b62af8423b15cc category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8QF9K CVE: CVE-2023-7042 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ad25ee36f00172f7d53242dc77c69fff7ced0755 ] We should check whether the WMI_TLV_TAG_STRUCT_MGMT_TX_COMPL_EVENT tlv is present before accessing it, otherwise a null pointer deference error will occur. Fixes: dc405152bb64 ("ath10k: handle mgmt tx completion event") Signed-off-by: Xingyuan Mo <hdthky0(a)gmail.com> Acked-by: Jeff Johnson <quic_jjohnson(a)quicinc.com> Signed-off-by: Kalle Valo <quic_kvalo(a)quicinc.com> Link: https://msgid.link/20231208043433.271449-1-hdthky0@gmail.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Ziyang Xuan <william.xuanziyang(a)huawei.com> --- drivers/net/wireless/ath/ath10k/wmi-tlv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c index 4f2fbc610d79..0eeb74245372 100644 --- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c +++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c @@ -844,6 +844,10 @@ ath10k_wmi_tlv_op_pull_mgmt_tx_compl_ev(struct ath10k *ar, struct sk_buff *skb, } ev = tb[WMI_TLV_TAG_STRUCT_MGMT_TX_COMPL_EVENT]; + if (!ev) { + kfree(tb); + return -EPROTO; + } arg->desc_id = ev->desc_id; arg->status = ev->status; -- 2.25.1

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[PATCH] LoongArch: fix boot error caused by ioremap_page_range error
by Hongchen Zhang 22 Apr '24

22 Apr '24

LoongArch inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I9IJVV ------------------------------------------ use vmap_page_range to map pci address space instead of ioremap_page_range. Fixes: ae528eb14e9a ("mm: Introduce vmap_page_range() to map pages in PCI address space") Signed-off-by: Hongchen Zhang <zhanghongchen(a)loongson.cn> --- arch/loongarch/kernel/legacy_boot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/loongarch/kernel/legacy_boot.c b/arch/loongarch/kernel/legacy_boot.c index 35a0a118486f..29fdeb93dfd5 100644 --- a/arch/loongarch/kernel/legacy_boot.c +++ b/arch/loongarch/kernel/legacy_boot.c @@ -436,7 +436,7 @@ static int __init add_legacy_isa_io(struct fwnode_handle *fwnode, unsigned long } vaddr = (unsigned long)(PCI_IOBASE + range->io_start); - ret = ioremap_page_range(vaddr, vaddr + range->size, range->hw_start, + ret = vmap_page_range(vaddr, vaddr + range->size, range->hw_start, pgprot_device(PAGE_KERNEL)); return ret; } -- 2.33.0

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[PATCH openEuler-1.0-LTS] wifi: ath10k: fix NULL pointer dereference in ath10k_wmi_tlv_op_pull_mgmt_tx_compl_ev()
by Ziyang Xuan 22 Apr '24

22 Apr '24

From: Xingyuan Mo <hdthky0(a)gmail.com> stable inclusion from stable-v4.19.311 commit 0cd3b0a1dc987697cba1fe93c784365aa1f8a230 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8QF9K CVE: CVE-2023-7042 -------------------------------- [ Upstream commit ad25ee36f00172f7d53242dc77c69fff7ced0755 ] We should check whether the WMI_TLV_TAG_STRUCT_MGMT_TX_COMPL_EVENT tlv is present before accessing it, otherwise a null pointer deference error will occur. Fixes: dc405152bb64 ("ath10k: handle mgmt tx completion event") Signed-off-by: Xingyuan Mo <hdthky0(a)gmail.com> Acked-by: Jeff Johnson <quic_jjohnson(a)quicinc.com> Signed-off-by: Kalle Valo <quic_kvalo(a)quicinc.com> Link: https://msgid.link/20231208043433.271449-1-hdthky0@gmail.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Ziyang Xuan <william.xuanziyang(a)huawei.com> --- drivers/net/wireless/ath/ath10k/wmi-tlv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c index cdc1e64d52ad..275ca020c4d6 100644 --- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c +++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c @@ -678,6 +678,10 @@ ath10k_wmi_tlv_op_pull_mgmt_tx_compl_ev(struct ath10k *ar, struct sk_buff *skb, } ev = tb[WMI_TLV_TAG_STRUCT_MGMT_TX_COMPL_EVENT]; + if (!ev) { + kfree(tb); + return -EPROTO; + } arg->desc_id = ev->desc_id; arg->status = ev->status; -- 2.25.1

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