CVE-2025-21889

一、漏洞信息
漏洞编号：CVE-2025-21889
漏洞归属组件：kernel
漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.1.8,6.4.0,6.6.0
CVSS V3.0分值：
BaseScore：N/A None
Vector：CVSS：3.0/
漏洞简述：
In the Linux kernel, the following vulnerability has been resolved:perf/core: Add RCU read lock protection to perf_iterate_ctx()The perf_iterate_ctx() function performs RCU list traversal butcurrently lacks RCU read lock protection. This causes lockdep warningswhen running perf probe with unshare(1) under CONFIG_PROVE_RCU_LIST=y: WARNING: suspicious RCU usage kernel/events/core.c:8168 RCU-list traversed in non-reader section!! Call Trace: lockdep_rcu_suspicious ? perf_event_addr_filters_apply perf_iterate_ctx perf_event_exec begin_new_exec ? load_elf_phdrs load_elf_binary ? lock_acquire ? find_held_lock ? bprm_execve bprm_execve do_execveat_common.isra.0 __x64_sys_execve do_syscall_64 entry_SYSCALL_64_after_hwframeThis protection was previously present but was removed in commitbd2756811766 ( perf: Rewrite core context handling ). Add back thenecessary rcu_read_lock()/rcu_read_unlock() pair aroundperf_iterate_ctx() call in perf_event_exec().[ mingo: Use scoped_guard() as suggested by Peter ]
漏洞公开时间：2025-03-27 23:15:56
漏洞创建时间：2025-03-27 23:49:02
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2025-21889

更多参考(点击展开)

参考来源	参考链接	来源链接
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0fe8813baf4b2e865d3b2c735ce1a15b86002c74
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a2475ccad6120546ea45dbcd6cd1f74dc565ef6b
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dd536566dda9a551fc2a2acfab5313a5bb13ed02
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f390c2eea571945f357a2d3b9fcb1c015767132e
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2025-21889	https://bugzilla.suse.com/show_bug.cgi?id=1240167
suse_bugzilla	https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2025/CVE-2025-21889.mbox	https://bugzilla.suse.com/show_bug.cgi?id=1240167
suse_bugzilla	https://git.kernel.org/stable/c/f390c2eea571945f357a2d3b9fcb1c015767132e	https://bugzilla.suse.com/show_bug.cgi?id=1240167
suse_bugzilla	https://git.kernel.org/stable/c/a2475ccad6120546ea45dbcd6cd1f74dc565ef6b	https://bugzilla.suse.com/show_bug.cgi?id=1240167
suse_bugzilla	https://git.kernel.org/stable/c/dd536566dda9a551fc2a2acfab5313a5bb13ed02	https://bugzilla.suse.com/show_bug.cgi?id=1240167
suse_bugzilla	https://git.kernel.org/stable/c/0fe8813baf4b2e865d3b2c735ce1a15b86002c74	https://bugzilla.suse.com/show_bug.cgi?id=1240167
anolis		https://anas.openanolis.cn/cves/detail/CVE-2025-21889

漏洞分析指导链接：
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
漏洞数据来源:
openBrain开源漏洞感知系统
漏洞补丁信息：

详情(点击展开)

影响的包	修复版本	修复补丁	问题引入补丁	来源
linux_kernel	6.6.81	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f390c2eea571945f357a2d3b9fcb1c015767132eIssue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bd27568117664b8b3e259721393df420ed51f57b	linuxkernelcves
linux_kernel	6.12.18	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a2475ccad6120546ea45dbcd6cd1f74dc565ef6bIssue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bd27568117664b8b3e259721393df420ed51f57b	linuxkernelcves
linux_kernel	6.13.6	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=dd536566dda9a551fc2a2acfab5313a5bb13ed02Issue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bd27568117664b8b3e259721393df420ed51f57b	linuxkernelcves
linux_kernel	6.14	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0fe8813baf4b2e865d3b2c735ce1a15b86002c74Please	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bd27568117664b8b3e259721393df420ed51f57b	linuxkernelcves

二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:perf/core: Add RCU read lock protection to perf_iterate_ctx()The perf_iterate_ctx() function performs RCU list traversal butcurrently lacks RCU read lock protection. This causes lockdep warningswhen running perf probe with unshare(1) under CONFIG_PROVE_RCU_LIST=y:WARNING: suspicious RCU usagekernel/events/core.c:8168 RCU-list traversed in non-reader section!! Call Trace: lockdep_rcu_suspicious ? perf_event_addr_filters_apply perf_iterate_ctx perf_event_exec begin_new_exec ? load_elf_phdrs load_elf_binary ? lock_acquire ? find_held_lock ? bprm_execve bprm_execve do_execveat_common.isra.0 __x64_sys_execve do_syscall_64 entry_SYSCALL_64_after_hwframeThis protection was previously present but was removed in commitbd2756811766 ("perf: Rewrite core context handling"). Add back thenecessary rcu_read_lock()/rcu_read_unlock() pair aroundperf_iterate_ctx() call in perf_event_exec().[ mingo: Use scoped_guard() as suggested by Peter ]The Linux kernel CVE team has assigned CVE-2025-21889 to this issue.
openEuler评分：
3.9
Vector：CVSS：3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
受影响版本排查(受影响/不受影响)：
1.openEuler-24.03-LTS(6.6.0):受影响
2.openEuler-24.03-LTS-SP1(6.6.0):受影响
3.master(6.6.0):不受影响
4.openEuler-20.03-LTS-SP4(4.19.90):不受影响
5.openEuler-22.03-LTS-SP3(5.10.0):不受影响
6.openEuler-22.03-LTS-SP4(5.10.0):不受影响
7.openEuler-24.03-LTS-Next(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
1.master(6.6.0):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.openEuler-22.03-LTS-SP4(5.10.0):否
5.openEuler-24.03-LTS(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):否
7.openEuler-24.03-LTS-SP1(6.6.0):否

原因说明：
1.openEuler-24.03-LTS(6.6.0):正常修复
2.openEuler-24.03-LTS-SP1(6.6.0):正常修复
3.master(6.6.0):不受影响-漏洞代码不能被攻击者触发
4.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发
5.openEuler-20.03-LTS-SP4(4.19.90):不受影响-漏洞代码不存在
6.openEuler-22.03-LTS-SP3(5.10.0):不受影响-漏洞代码不存在
7.openEuler-22.03-LTS-SP4(5.10.0):不受影响-漏洞代码不存在

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-1372

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**issue处理注意事项:** 
**1. 当前issue受影响的分支提交pr时, 须在pr描述中填写当前issue编号进行关联, 否则无法关闭当前issue;**
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************************************************************************
影响性分析说明:

openEuler评分: (评分和向量)

受影响版本排查(受影响/不受影响): 
1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3(5.10.0):
4.openEuler-22.03-LTS-SP4(5.10.0):
5.openEuler-24.03-LTS(6.6.0):
6.openEuler-24.03-LTS-Next(6.6.0):
7.openEuler-24.03-LTS-SP1(6.6.0):

修复是否涉及abi变化(是/否)：
1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3(5.10.0):
4.openEuler-22.03-LTS-SP4(5.10.0):
5.openEuler-24.03-LTS(6.6.0):
6.openEuler-24.03-LTS-Next(6.6.0):
7.openEuler-24.03-LTS-SP1(6.6.0):

原因说明：
1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3(5.10.0):
4.openEuler-22.03-LTS-SP4(5.10.0):
5.openEuler-24.03-LTS(6.6.0):
6.openEuler-24.03-LTS-Next(6.6.0):
7.openEuler-24.03-LTS-SP1(6.6.0):

issue处理具体操作请参考: 
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
pr关联issue具体操作请参考:
https://gitee.com/help/articles/4142

参考网址	关联pr	状态	补丁链接
https://nvd.nist.gov/vuln/detail/CVE-2025-21889	None	None	https://git.kernel.org/stable/c/0fe8813baf4b2e865d3b2c735ce1a15b86002c74 https://git.kernel.org/stable/c/dd536566dda9a551fc2a2acfab5313a5bb13ed02 https://git.kernel.org/stable/c/a2475ccad6120546ea45dbcd6cd1f74dc565ef6b https://git.kernel.org/stable/c/f390c2eea571945f357a2d3b9fcb1c015767132e
https://ubuntu.com/security/CVE-2025-21889	None	None	https://discourse.ubuntu.com/c/project
https://www.opencve.io/cve/CVE-2025-21889
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2025-21889
https://security-tracker.debian.org/tracker/CVE-2025-21889
http://www.cnnvd.org.cn/web/vulnerability/queryLds.tag?qcvCnnvdid=CVE-2025-21889

说明：补丁链接仅供初步排查参考，实际可用性请人工再次确认，补丁下载验证可使用CVE补丁工具。
若补丁不准确，烦请在此issue下评论 '/report-patch 参考网址补丁链接1,补丁链接2' 反馈正确信息，便于我们不断优化工具，不胜感激。
如 /report-patch https://security-tracker.debian.org/tracker/CVE-2021-3997 https://github.com/systemd/systemd/commit/5b1cf7a9be37e20133c0208005274ce4a5b5c6a1

CVE-2025-21889

影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:

perf/core: Add RCU read lock protection to perf_iterate_ctx()

The perf_iterate_ctx() function performs RCU list traversal but
currently lacks RCU read lock protection. This causes lockdep warnings
when running perf probe with unshare(1) under CONFIG_PROVE_RCU_LIST=y:

WARNING: suspicious RCU usage
kernel/events/core.c:8168 RCU-list traversed in non-reader section!!

 Call Trace:
  lockdep_rcu_suspicious
  ? perf_event_addr_filters_apply
  perf_iterate_ctx
  perf_event_exec
  begin_new_exec
  ? load_elf_phdrs
  load_elf_binary
  ? lock_acquire
  ? find_held_lock
  ? bprm_execve
  bprm_execve
  do_execveat_common.isra.0
  __x64_sys_execve
  do_syscall_64
  entry_SYSCALL_64_after_hwframe

This protection was previously present but was removed in commit
bd2756811766 ("perf: Rewrite core context handling"). Add back the
necessary rcu_read_lock()/rcu_read_unlock() pair around
perf_iterate_ctx() call in perf_event_exec().

[ mingo: Use scoped_guard() as suggested by Peter ]

The Linux kernel CVE team has assigned CVE-2025-21889 to this issue.

openEuler评分:(评分和向量)
3.9
AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

受影响版本排查(受影响/不受影响):
1.master(6.1.0):不受影响
2.openEuler-20.03-LTS-SP4:不受影响
3.openEuler-22.03-LTS-SP3:不受影响
4.openEuler-22.03-LTS-SP4:不受影响
5.openEuler-24.03-LTS:受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:受影响

修复是否涉及abi变化(是/否)：
1.master(6.1.0):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3:否
4.openEuler-22.03-LTS-SP4:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否

原因说明：
1.master(23.08.5):不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在
4.openEuler-22.03-LTS-SP3:不受影响-漏洞代码不存在
5.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
6.openEuler-24.03-LTS:正常修复
7.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP1:正常修复

@CTC-XiboWang 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态  | 分析项目 | 内容 |
|:--:|:--:|---------|
|已分析|1.影响性分析说明|In the Linux kernel, the following vulnerability has been resolved:perf/core: Add RCU read lock protection to perf_iterate_ctx()The perf_iterate_ctx() function performs RCU list traversal butcurrently lacks RCU read lock protection. This causes lockdep warningswhen running perf probe with unshare(1) under CONFIG_PROVE_RCU_LIST=y:WARNING: suspicious RCU usagekernel/events/core.c:8168 RCU-list traversed in non-reader section!! Call Trace:  lockdep_rcu_suspicious  ? perf_event_addr_filters_apply  perf_iterate_ctx  perf_event_exec  begin_new_exec  ? load_elf_phdrs  load_elf_binary  ? lock_acquire  ? find_held_lock  ? bprm_execve  bprm_execve  do_execveat_common.isra.0  __x64_sys_execve  do_syscall_64  entry_SYSCALL_64_after_hwframeThis protection was previously present but was removed in commitbd2756811766 (&#34;perf: Rewrite core context handling&#34;). Add back thenecessary rcu_read_lock()/rcu_read_unlock() pair aroundperf_iterate_ctx() call in perf_event_exec().[ mingo: Use scoped_guard() as suggested by Peter ]The Linux kernel CVE team has assigned CVE-2025-21889 to this issue.|
|已分析|2.openEulerScore|3.9|
|已分析|3.openEulerVector|AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L|
|已分析|4.受影响版本排查|openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP1:受影响,master:不受影响,openEuler-20.03-LTS-SP4:不受影响,openEuler-22.03-LTS-SP3:不受影响,openEuler-22.03-LTS-SP4:不受影响,openEuler-24.03-LTS-Next:不受影响|
|已分析|5.是否涉及abi变化|master:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP3:否,openEuler-22.03-LTS-SP4:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-Next:否,openEuler-24.03-LTS-SP1:否|
|已分析|6.原因说明|openEuler-24.03-LTS:正常修复,openEuler-24.03-LTS-SP1:正常修复,master:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发,openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在,openEuler-22.03-LTS-SP3:不受影响-漏洞代码不存在,openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在|

**请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.**

CVE-2025-21889

影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:

perf/core: Add RCU read lock protection to perf_iterate_ctx()

The perf_iterate_ctx() function performs RCU list traversal but
currently lacks RCU read lock protection. This causes lockdep warnings
when running perf probe with unshare(1) under CONFIG_PROVE_RCU_LIST=y:

WARNING: suspicious RCU usage
kernel/events/core.c:8168 RCU-list traversed in non-reader section!!

 Call Trace:
  lockdep_rcu_suspicious
  ? perf_event_addr_filters_apply
  perf_iterate_ctx
  perf_event_exec
  begin_new_exec
  ? load_elf_phdrs
  load_elf_binary
  ? lock_acquire
  ? find_held_lock
  ? bprm_execve
  bprm_execve
  do_execveat_common.isra.0
  __x64_sys_execve
  do_syscall_64
  entry_SYSCALL_64_after_hwframe

This protection was previously present but was removed in commit
bd2756811766 ("perf: Rewrite core context handling"). Add back the
necessary rcu_read_lock()/rcu_read_unlock() pair around
perf_iterate_ctx() call in perf_event_exec().

[ mingo: Use scoped_guard() as suggested by Peter ]

The Linux kernel CVE team has assigned CVE-2025-21889 to this issue.

openEuler评分:(评分和向量)
3.9
AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

受影响版本排查(受影响/不受影响):
1.master(6.1.0):不受影响
2.openEuler-20.03-LTS-SP4:不受影响
3.openEuler-22.03-LTS-SP3:不受影响
4.openEuler-22.03-LTS-SP4:不受影响
5.openEuler-24.03-LTS:受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:受影响

修复是否涉及abi变化(是/否)：
1.master(6.1.0):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3:否
4.openEuler-22.03-LTS-SP4:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否

原因说明：
1.master(23.08.5):不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在
4.openEuler-22.03-LTS-SP3:不受影响-漏洞代码不存在
5.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
6.openEuler-24.03-LTS:正常修复
7.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP1:正常修复

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CVE-2025-21889

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