October 2024 - Kernel - mailweb.openeuler.org

[PATCH OLK-5.10] hisilicon/hisi_hbmcache: Use mutex_trylock to prevent hung task
by Zhang Zekun 30 Oct '24

30 Oct '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IB0X12 -------------------------------------------------- Use mutex_trylock() to prevent hung task when concurrent power on/off is triggered. Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- drivers/soc/hisilicon/hisi_hbmcache.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/soc/hisilicon/hisi_hbmcache.c b/drivers/soc/hisilicon/hisi_hbmcache.c index e06f613c143b..2bebb5a9e2aa 100644 --- a/drivers/soc/hisilicon/hisi_hbmcache.c +++ b/drivers/soc/hisilicon/hisi_hbmcache.c @@ -24,7 +24,9 @@ static ssize_t state_store(struct device *d, struct device_attribute *attr, acpi_handle handle = adev->handle; acpi_status status = AE_OK; - mutex_lock(&cache_lock); + if (!mutex_trylock(&cache_lock)) + return -EBUSY; + switch (type) { case STATE_ONLINE: status = acpi_evaluate_object(handle, "_ON", NULL, NULL); -- 2.17.1

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[PATCH OLK-6.6 0/1] CVE-2024-50059
by Yongqiang Liu 30 Oct '24

30 Oct '24

Kaixin Wang (1): ntb: ntb_hw_switchtec: Fix use after free vulnerability in switchtec_ntb_remove due to race condition drivers/ntb/hw/mscc/ntb_hw_switchtec.c | 1 + 1 file changed, 1 insertion(+) -- 2.25.1

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[PATCH OLK-6.6 0/2] Backport "ima: Avoid blocking in RCU read-side critical section"
by Gu Bowen 30 Oct '24

30 Oct '24

Revert self-developed solution and backport mainline one. GUO Zihua (1): ima: Avoid blocking in RCU read-side critical section Gu Bowen (1): Revert "ima: Avoid blocking in RCU read-side critical section" include/linux/lsm_hook_defs.h | 2 +- include/linux/security.h | 5 +++-- kernel/auditfilter.c | 5 +++-- security/apparmor/audit.c | 6 +++--- security/apparmor/include/audit.h | 2 +- security/integrity/ima/ima.h | 2 +- security/integrity/ima/ima_policy.c | 15 +++++++++------ security/security.c | 6 ++++-- security/selinux/include/audit.h | 4 +++- security/selinux/ss/services.c | 5 +++-- security/smack/smack_lsm.c | 4 +++- 11 files changed, 34 insertions(+), 22 deletions(-) -- 2.25.1

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[PATCH OLK-6.6 0/4] Script execution control
by Gu Bowen 30 Oct '24

30 Oct '24

Ensure that direct file execution (e.g. ./script.sh) and indirect file execution (e.g. sh script.sh) lead to the same result to support script protection. Gu Bowen (1): IMA support bprm_creds_for_exec Kees Cook (1): exec: Check __FMODE_EXEC instead of in_execve for LSMs Linus Torvalds (1): execve: open the executable file before doing anything else Mickaël Salaün (1): exec: Add a new AT_CHECK flag to execveat(2) fs/exec.c | 87 ++++++++++++++++++------------- include/linux/binfmts.h | 7 ++- include/linux/ima.h | 1 + include/uapi/linux/fcntl.h | 31 +++++++++++ kernel/audit.h | 1 + kernel/auditsc.c | 1 + security/apparmor/lsm.c | 4 +- security/integrity/ima/ima_main.c | 11 ++++ security/security.c | 17 +++++- security/tomoyo/tomoyo.c | 3 +- 10 files changed, 123 insertions(+), 40 deletions(-) -- 2.25.1

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[PATCH V3 OLK-6.6 0/2] add vdpa support for x86 and enable vdpa migration.
by Jiang Dongxu 30 Oct '24

30 Oct '24

From: jiangdongxu <jiangdongxu1(a)huawei.com> Christoph Hellwig (1): virtio_blk: remove the broken zone revalidation support jiangdongxu (1): vdpa: add support for x86 and open vdpa migration build config arch/arm64/configs/openeuler_defconfig | 2 +- arch/x86/configs/openeuler_defconfig | 5 +++-- drivers/block/virtio_blk.c | 26 -------------------------- 3 files changed, 4 insertions(+), 29 deletions(-) -- 2.27.0

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[PATCH OLK-5.10] ppp: fix ppp_async_encode() illegal access
by Zhang Changzhong 30 Oct '24

30 Oct '24

From: Eric Dumazet <edumazet(a)google.com> stable inclusion from stable-v5.10.227 commit 30d91a478d58cbae3dbaa8224d17d0d839f0d71b category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYRDK CVE: CVE-2024-50035 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 40dddd4b8bd08a69471efd96107a4e1c73fabefc ] syzbot reported an issue in ppp_async_encode() [1] In this case, pppoe_sendmsg() is called with a zero size. Then ppp_async_encode() is called with an empty skb. BUG: KMSAN: uninit-value in ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline] BUG: KMSAN: uninit-value in ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline] ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634 ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [inline] ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304 pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113 __release_sock+0x1da/0x330 net/core/sock.c:3072 release_sock+0x6b/0x250 net/core/sock.c:3626 pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [inline] __se_sys_sendmmsg net/socket.c:2768 [inline] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4092 [inline] slab_alloc_node mm/slub.c:4135 [inline] kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587 __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1322 [inline] sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732 pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [inline] __se_sys_sendmmsg net/socket.c:2768 [inline] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 5411 Comm: syz.1.14 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: syzbot+1d121645899e7692f92a(a)syzkaller.appspotmail.com Signed-off-by: Eric Dumazet <edumazet(a)google.com> Reviewed-by: Simon Horman <horms(a)kernel.org> Link: https://patch.msgid.link/20241009185802.3763282-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zhang Changzhong <zhangchangzhong(a)huawei.com> --- drivers/net/ppp/ppp_async.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ppp/ppp_async.c b/drivers/net/ppp/ppp_async.c index aada8a3..164c11d 100644 --- a/drivers/net/ppp/ppp_async.c +++ b/drivers/net/ppp/ppp_async.c @@ -552,7 +552,7 @@ ppp_async_encode(struct asyncppp *ap) * and 7 (code-reject) must be sent as though no options * had been negotiated. */ - islcp = proto == PPP_LCP && 1 <= data[2] && data[2] <= 7; + islcp = proto == PPP_LCP && count >= 3 && 1 <= data[2] && data[2] <= 7; if (i == 0) { if (islcp) -- 2.9.5

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[PATCH openEuler-22.03-LTS-SP1] ppp: fix ppp_async_encode() illegal access
by Zhang Changzhong 30 Oct '24

30 Oct '24

From: Eric Dumazet <edumazet(a)google.com> stable inclusion from stable-v5.10.227 commit 30d91a478d58cbae3dbaa8224d17d0d839f0d71b category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYRDK CVE: CVE-2024-50035 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 40dddd4b8bd08a69471efd96107a4e1c73fabefc ] syzbot reported an issue in ppp_async_encode() [1] In this case, pppoe_sendmsg() is called with a zero size. Then ppp_async_encode() is called with an empty skb. BUG: KMSAN: uninit-value in ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline] BUG: KMSAN: uninit-value in ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline] ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634 ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [inline] ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304 pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113 __release_sock+0x1da/0x330 net/core/sock.c:3072 release_sock+0x6b/0x250 net/core/sock.c:3626 pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [inline] __se_sys_sendmmsg net/socket.c:2768 [inline] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4092 [inline] slab_alloc_node mm/slub.c:4135 [inline] kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587 __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1322 [inline] sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732 pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [inline] __se_sys_sendmmsg net/socket.c:2768 [inline] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 5411 Comm: syz.1.14 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: syzbot+1d121645899e7692f92a(a)syzkaller.appspotmail.com Signed-off-by: Eric Dumazet <edumazet(a)google.com> Reviewed-by: Simon Horman <horms(a)kernel.org> Link: https://patch.msgid.link/20241009185802.3763282-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zhang Changzhong <zhangchangzhong(a)huawei.com> --- drivers/net/ppp/ppp_async.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ppp/ppp_async.c b/drivers/net/ppp/ppp_async.c index aada8a3..164c11d 100644 --- a/drivers/net/ppp/ppp_async.c +++ b/drivers/net/ppp/ppp_async.c @@ -552,7 +552,7 @@ ppp_async_encode(struct asyncppp *ap) * and 7 (code-reject) must be sent as though no options * had been negotiated. */ - islcp = proto == PPP_LCP && 1 <= data[2] && data[2] <= 7; + islcp = proto == PPP_LCP && count >= 3 && 1 <= data[2] && data[2] <= 7; if (i == 0) { if (islcp) -- 2.9.5

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[PATCH openEuler-1.0-LTS] ppp: fix ppp_async_encode() illegal access
by Zhang Changzhong 30 Oct '24

30 Oct '24

From: Eric Dumazet <edumazet(a)google.com> mainline inclusion from mainline-v6.12-rc3 commit 40dddd4b8bd08a69471efd96107a4e1c73fabefc category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYRDK CVE: CVE-2024-50035 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- syzbot reported an issue in ppp_async_encode() [1] In this case, pppoe_sendmsg() is called with a zero size. Then ppp_async_encode() is called with an empty skb. BUG: KMSAN: uninit-value in ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline] BUG: KMSAN: uninit-value in ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_encode drivers/net/ppp/ppp_async.c:545 [inline] ppp_async_push+0xb4f/0x2660 drivers/net/ppp/ppp_async.c:675 ppp_async_send+0x130/0x1b0 drivers/net/ppp/ppp_async.c:634 ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2280 [inline] ppp_input+0x1f1/0xe60 drivers/net/ppp/ppp_generic.c:2304 pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113 __release_sock+0x1da/0x330 net/core/sock.c:3072 release_sock+0x6b/0x250 net/core/sock.c:3626 pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [inline] __se_sys_sendmmsg net/socket.c:2768 [inline] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4092 [inline] slab_alloc_node mm/slub.c:4135 [inline] kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4187 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587 __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1322 [inline] sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732 pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [inline] __se_sys_sendmmsg net/socket.c:2768 [inline] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 5411 Comm: syz.1.14 Not tainted 6.12.0-rc1-syzkaller-00165-g360c1f1f24c6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: syzbot+1d121645899e7692f92a(a)syzkaller.appspotmail.com Signed-off-by: Eric Dumazet <edumazet(a)google.com> Reviewed-by: Simon Horman <horms(a)kernel.org> Link: https://patch.msgid.link/20241009185802.3763282-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Signed-off-by: Zhang Changzhong <zhangchangzhong(a)huawei.com> --- drivers/net/ppp/ppp_async.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ppp/ppp_async.c b/drivers/net/ppp/ppp_async.c index 748b03c..fa3690c 100644 --- a/drivers/net/ppp/ppp_async.c +++ b/drivers/net/ppp/ppp_async.c @@ -555,7 +555,7 @@ ppp_async_encode(struct asyncppp *ap) * and 7 (code-reject) must be sent as though no options * had been negotiated. */ - islcp = proto == PPP_LCP && 1 <= data[2] && data[2] <= 7; + islcp = proto == PPP_LCP && count >= 3 && 1 <= data[2] && data[2] <= 7; if (i == 0) { if (islcp) -- 2.9.5

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[PATCH OLK-6.6] bpf: Fail verification for sign-extension of packet data/data_end/data_meta
by Chen Zhongjin 30 Oct '24

30 Oct '24

From: Yonghong Song <yonghong.song(a)linux.dev> mainline inclusion from mainline-v6.12-rc1 commit 92de36080c93296ef9005690705cba260b9bd68a category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYPJQ CVE: CVE-2024-47702 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- syzbot reported a kernel crash due to commit 1f1e864b6555 ("bpf: Handle sign-extenstin ctx member accesses"). The reason is due to sign-extension of 32-bit load for packet data/data_end/data_meta uapi field. The original code looks like: r2 = *(s32 *)(r1 + 76) /* load __sk_buff->data */ r3 = *(u32 *)(r1 + 80) /* load __sk_buff->data_end */ r0 = r2 r0 += 8 if r3 > r0 goto +1 ... Note that __sk_buff->data load has 32-bit sign extension. After verification and convert_ctx_accesses(), the final asm code looks like: r2 = *(u64 *)(r1 +208) r2 = (s32)r2 r3 = *(u64 *)(r1 +80) r0 = r2 r0 += 8 if r3 > r0 goto pc+1 ... Note that 'r2 = (s32)r2' may make the kernel __sk_buff->data address invalid which may cause runtime failure. Currently, in C code, typically we have void *data = (void *)(long)skb->data; void *data_end = (void *)(long)skb->data_end; ... and it will generate r2 = *(u64 *)(r1 +208) r3 = *(u64 *)(r1 +80) r0 = r2 r0 += 8 if r3 > r0 goto pc+1 If we allow sign-extension, void *data = (void *)(long)(int)skb->data; void *data_end = (void *)(long)skb->data_end; ... the generated code looks like r2 = *(u64 *)(r1 +208) r2 <<= 32 r2 s>>= 32 r3 = *(u64 *)(r1 +80) r0 = r2 r0 += 8 if r3 > r0 goto pc+1 and this will cause verification failure since "r2 <<= 32" is not allowed as "r2" is a packet pointer. To fix this issue for case r2 = *(s32 *)(r1 + 76) /* load __sk_buff->data */ this patch added additional checking in is_valid_access() callback function for packet data/data_end/data_meta access. If those accesses are with sign-extenstion, the verification will fail. [1] https://lore.kernel.org/bpf/000000000000c90eee061d236d37@google.com/ Reported-by: syzbot+ad9ec60c8eaf69e6f99c(a)syzkaller.appspotmail.com Fixes: 1f1e864b6555 ("bpf: Handle sign-extenstin ctx member accesses") Acked-by: Eduard Zingerman <eddyz87(a)gmail.com> Signed-off-by: Yonghong Song <yonghong.song(a)linux.dev> Link: https://lore.kernel.org/r/20240723153439.2429035-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Signed-off-by: Andrii Nakryiko <andrii(a)kernel.org> Conflicts: kernel/bpf/verifier.c [patch set:("bpf, lsm: Add check for BPF LSM return value") was not merged] include/linux/bpf.h [fix struct bpf_insn_access_aux KABI breakage] Signed-off-by: Chen Zhongjin <chenzhongjin(a)huawei.com> --- include/linux/bpf.h | 1 + kernel/bpf/verifier.c | 5 +++-- net/core/filter.c | 21 ++++++++++++++++----- 3 files changed, 20 insertions(+), 7 deletions(-) diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 8c4c2c39a6c1..0282c3435233 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -912,6 +912,7 @@ static_assert(__BPF_REG_TYPE_MAX <= BPF_BASE_TYPE_LIMIT); */ struct bpf_insn_access_aux { enum bpf_reg_type reg_type; + KABI_FILL_HOLE(bool is_ldsx); union { int ctx_field_size; struct { diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index d1041517a984..82f2be2ddd06 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -5549,11 +5549,12 @@ static int check_packet_access(struct bpf_verifier_env *env, u32 regno, int off, /* check access to 'struct bpf_context' fields. Supports fixed offsets only */ static int check_ctx_access(struct bpf_verifier_env *env, int insn_idx, int off, int size, enum bpf_access_type t, enum bpf_reg_type *reg_type, - struct btf **btf, u32 *btf_id) + struct btf **btf, u32 *btf_id, bool is_ldsx) { struct bpf_insn_access_aux info = { .reg_type = *reg_type, .log = &env->log, + .is_ldsx = is_ldsx, }; if (env->ops->is_valid_access && @@ -6802,7 +6803,7 @@ static int check_mem_access(struct bpf_verifier_env *env, int insn_idx, u32 regn return err; err = check_ctx_access(env, insn_idx, off, size, t, &reg_type, &btf, - &btf_id); + &btf_id, is_ldsx); if (err) verbose_linfo(env, insn_idx, "; "); if (!err && t == BPF_READ && value_regno >= 0) { diff --git a/net/core/filter.c b/net/core/filter.c index e16d746c23da..e4f1dc9f222b 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -8601,13 +8601,16 @@ static bool bpf_skb_is_valid_access(int off, int size, enum bpf_access_type type if (off + size > offsetofend(struct __sk_buff, cb[4])) return false; break; + case bpf_ctx_range(struct __sk_buff, data): + case bpf_ctx_range(struct __sk_buff, data_meta): + case bpf_ctx_range(struct __sk_buff, data_end): + if (info->is_ldsx || size != size_default) + return false; + break; case bpf_ctx_range_till(struct __sk_buff, remote_ip6[0], remote_ip6[3]): case bpf_ctx_range_till(struct __sk_buff, local_ip6[0], local_ip6[3]): case bpf_ctx_range_till(struct __sk_buff, remote_ip4, remote_ip4): case bpf_ctx_range_till(struct __sk_buff, local_ip4, local_ip4): - case bpf_ctx_range(struct __sk_buff, data): - case bpf_ctx_range(struct __sk_buff, data_meta): - case bpf_ctx_range(struct __sk_buff, data_end): if (size != size_default) return false; break; @@ -9051,6 +9054,14 @@ static bool xdp_is_valid_access(int off, int size, } } return false; + } else { + switch (off) { + case offsetof(struct xdp_md, data_meta): + case offsetof(struct xdp_md, data): + case offsetof(struct xdp_md, data_end): + if (info->is_ldsx) + return false; + } } switch (off) { @@ -9381,12 +9392,12 @@ static bool flow_dissector_is_valid_access(int off, int size, switch (off) { case bpf_ctx_range(struct __sk_buff, data): - if (size != size_default) + if (info->is_ldsx || size != size_default) return false; info->reg_type = PTR_TO_PACKET; return true; case bpf_ctx_range(struct __sk_buff, data_end): - if (size != size_default) + if (info->is_ldsx || size != size_default) return false; info->reg_type = PTR_TO_PACKET_END; return true; -- 2.25.1

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[PATCH OLK-6.6] thermal: core: Reference count the zone in thermal_zone_get_by_id()
by Xiongfeng Wang 30 Oct '24

30 Oct '24

From: "Rafael J. Wysocki" <rafael.j.wysocki(a)intel.com> mainline inclusion from mainline-v6.12-rc3 commit a42a5839f400e929c489bb1b58f54596c4535167 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYRF5 CVE: CVE-2024-50028 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- There are places in the thermal netlink code where nothing prevents the thermal zone object from going away while being accessed after it has been returned by thermal_zone_get_by_id(). To address this, make thermal_zone_get_by_id() get a reference on the thermal zone device object to be returned with the help of get_device(), under thermal_list_lock, and adjust all of its callers to this change with the help of the cleanup.h infrastructure. Fixes: 1ce50e7d408e ("thermal: core: genetlink support for events/cmd/sampling") Cc: 6.8+ <stable(a)vger.kernel.org> # 6.8+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Reviewed-by: Lukasz Luba <lukasz.luba(a)arm.com> Link: https://patch.msgid.link/6112242.lOV4Wx5bFT@rjwysocki.net Conflicts: drivers/thermal/thermal_core.h drivers/thermal/thermal_netlink.c [wangxiongfeng: fix context conflicts] Signed-off-by: Xiongfeng Wang <wangxiongfeng2(a)huawei.com> --- drivers/thermal/thermal_core.c | 1 + drivers/thermal/thermal_core.h | 3 +++ drivers/thermal/thermal_netlink.c | 9 +++------ 3 files changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index dee3022539cf..acf74fe64088 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -582,6 +582,7 @@ struct thermal_zone_device *thermal_zone_get_by_id(int id) mutex_lock(&thermal_list_lock); list_for_each_entry(tz, &thermal_tz_list, node) { if (tz->id == id) { + get_device(&tz->device); match = tz; break; } diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h index 024e82ebf592..91703b930956 100644 --- a/drivers/thermal/thermal_core.h +++ b/drivers/thermal/thermal_core.h @@ -56,6 +56,9 @@ int for_each_thermal_governor(int (*cb)(struct thermal_governor *, void *), struct thermal_zone_device *thermal_zone_get_by_id(int id); +DEFINE_CLASS(thermal_zone_get_by_id, struct thermal_zone_device *, + if (_T) put_device(&_T->device), thermal_zone_get_by_id(id), int id) + struct thermal_attr { struct device_attribute attr; char name[THERMAL_NAME_LENGTH]; diff --git a/drivers/thermal/thermal_netlink.c b/drivers/thermal/thermal_netlink.c index 08bc46c3ec7b..8d07531d9519 100644 --- a/drivers/thermal/thermal_netlink.c +++ b/drivers/thermal/thermal_netlink.c @@ -450,7 +450,6 @@ static int thermal_genl_cmd_tz_get_id(struct param *p) static int thermal_genl_cmd_tz_get_trip(struct param *p) { struct sk_buff *msg = p->msg; - struct thermal_zone_device *tz; struct nlattr *start_trip; struct thermal_trip trip; int ret, i, id; @@ -460,7 +459,7 @@ static int thermal_genl_cmd_tz_get_trip(struct param *p) id = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_TZ_ID]); - tz = thermal_zone_get_by_id(id); + CLASS(thermal_zone_get_by_id, tz)(id); if (!tz) return -EINVAL; @@ -498,7 +497,6 @@ static int thermal_genl_cmd_tz_get_trip(struct param *p) static int thermal_genl_cmd_tz_get_temp(struct param *p) { struct sk_buff *msg = p->msg; - struct thermal_zone_device *tz; int temp, ret, id; if (!p->attrs[THERMAL_GENL_ATTR_TZ_ID]) @@ -506,7 +504,7 @@ static int thermal_genl_cmd_tz_get_temp(struct param *p) id = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_TZ_ID]); - tz = thermal_zone_get_by_id(id); + CLASS(thermal_zone_get_by_id, tz)(id); if (!tz) return -EINVAL; @@ -524,7 +522,6 @@ static int thermal_genl_cmd_tz_get_temp(struct param *p) static int thermal_genl_cmd_tz_get_gov(struct param *p) { struct sk_buff *msg = p->msg; - struct thermal_zone_device *tz; int id, ret = 0; if (!p->attrs[THERMAL_GENL_ATTR_TZ_ID]) @@ -532,7 +529,7 @@ static int thermal_genl_cmd_tz_get_gov(struct param *p) id = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_TZ_ID]); - tz = thermal_zone_get_by_id(id); + CLASS(thermal_zone_get_by_id, tz)(id); if (!tz) return -EINVAL; -- 2.20.1

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