CVE-2025-21871

一、漏洞信息
 漏洞编号：[CVE-2025-21871](https://nvd.nist.gov/vuln/detail/CVE-2025-21871)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/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.x分值：
  BaseScore：5.5 Medium
  Vector：CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:tee: optee: Fix supplicant wait loopOP-TEE supplicant is a user-space daemon and it s possible for itbe hung or crashed or killed in the middle of processing an OP-TEERPC call. It becomes more complicated when there is incorrect shutdownordering of the supplicant process vs the OP-TEE client application whichcan eventually lead to system hang-up waiting for the closure of theclient application.Allow the client process waiting in kernel for supplicant response tobe killed rather than indefinitely waiting in an unkillable state. Also,a normal uninterruptible wait should not have resulted in the hung-taskwatchdog getting triggered, but the endless loop would.This fixes issues observed during system reboot/shutdown when supplicantgot hung for some reason or gets crashed/killed which lead to clientgetting hung in an unkillable state. It in turn lead to system being inhung up state requiring hard power off/on to recover.
 漏洞公开时间：2025-03-27 22:15:48
 漏洞创建时间：2025-03-27 22:33:49
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-21871
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/0180cf0373f84fff61b16f8c062553a13dd7cfca |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/21234efe2a8474a6d2d01ea9573319de7858ce44 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/3eb4911364c764572e9db4ab900a57689a54e8ce |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/70b0d6b0a199c5a3ee6c72f5e61681ed6f759612 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/c0a9a948159153be145f9471435695373904ee6d |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/d61cc1a435e6894bfb0dd3370c6f765d2d12825d |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ec18520f5edc20a00c34a8c9fdd6507c355e880f |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/fd9d2d6124c293e40797a080adf8a9c237efd8b8 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2025-21871 | https://bugzilla.suse.com/show_bug.cgi?id=1240183 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2025/CVE-2025-21871.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1240183 |
| suse_bugzilla | https://git.kernel.org/stable/c/3eb4911364c764572e9db4ab900a57689a54e8ce | https://bugzilla.suse.com/show_bug.cgi?id=1240183 |
| suse_bugzilla | https://git.kernel.org/stable/c/0180cf0373f84fff61b16f8c062553a13dd7cfca | https://bugzilla.suse.com/show_bug.cgi?id=1240183 |
| suse_bugzilla | https://git.kernel.org/stable/c/c0a9a948159153be145f9471435695373904ee6d | https://bugzilla.suse.com/show_bug.cgi?id=1240183 |
| suse_bugzilla | https://git.kernel.org/stable/c/ec18520f5edc20a00c34a8c9fdd6507c355e880f | https://bugzilla.suse.com/show_bug.cgi?id=1240183 |
| suse_bugzilla | https://git.kernel.org/stable/c/d61cc1a435e6894bfb0dd3370c6f765d2d12825d | https://bugzilla.suse.com/show_bug.cgi?id=1240183 |
| suse_bugzilla | https://git.kernel.org/stable/c/fd9d2d6124c293e40797a080adf8a9c237efd8b8 | https://bugzilla.suse.com/show_bug.cgi?id=1240183 |
| suse_bugzilla | https://git.kernel.org/stable/c/21234efe2a8474a6d2d01ea9573319de7858ce44 | https://bugzilla.suse.com/show_bug.cgi?id=1240183 |
| suse_bugzilla | https://git.kernel.org/stable/c/70b0d6b0a199c5a3ee6c72f5e61681ed6f759612 | https://bugzilla.suse.com/show_bug.cgi?id=1240183 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2025-21871 | https://bugzilla.suse.com/show_bug.cgi?id=1240183 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2025032735-CVE-2025-21871-bb8c@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2355333 |
| anolis |  | https://anas.openanolis.cn/cves/detail/CVE-2025-21871 |

</details>

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：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
| linux_kernel | 5.4.291 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3eb4911364c764572e9db4ab900a57689a54e8ceIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4fb0a5eb364d239722e745c02aef0dbd4e0f1ad2 | linuxkernelcves |
| linux_kernel | 5.10.235 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0180cf0373f84fff61b16f8c062553a13dd7cfcaIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4fb0a5eb364d239722e745c02aef0dbd4e0f1ad2 | linuxkernelcves |
| linux_kernel | 5.15.179 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=c0a9a948159153be145f9471435695373904ee6dIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4fb0a5eb364d239722e745c02aef0dbd4e0f1ad2 | linuxkernelcves |
| linux_kernel | 6.1.130 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=ec18520f5edc20a00c34a8c9fdd6507c355e880fIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4fb0a5eb364d239722e745c02aef0dbd4e0f1ad2 | linuxkernelcves |
| linux_kernel | 6.6.80 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=d61cc1a435e6894bfb0dd3370c6f765d2d12825dIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4fb0a5eb364d239722e745c02aef0dbd4e0f1ad2 | linuxkernelcves |
| linux_kernel | 6.12.17 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=fd9d2d6124c293e40797a080adf8a9c237efd8b8Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4fb0a5eb364d239722e745c02aef0dbd4e0f1ad2 | linuxkernelcves |
| linux_kernel | 6.13.5 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=21234efe2a8474a6d2d01ea9573319de7858ce44Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4fb0a5eb364d239722e745c02aef0dbd4e0f1ad2 | linuxkernelcves |
| linux_kernel | 6.14 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=70b0d6b0a199c5a3ee6c72f5e61681ed6f759612Please | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4fb0a5eb364d239722e745c02aef0dbd4e0f1ad2 | linuxkernelcves |

</details>

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:tee: optee: Fix supplicant wait loopOP-TEE supplicant is a user-space daemon and it&#39;s possible for itbe hung or crashed or killed in the middle of processing an OP-TEERPC call. It becomes more complicated when there is incorrect shutdownordering of the supplicant process vs the OP-TEE client application whichcan eventually lead to system hang-up waiting for the closure of theclient application.Allow the client process waiting in kernel for supplicant response tobe killed rather than indefinitely waiting in an unkillable state. Also,a normal uninterruptible wait should not have resulted in the hung-taskwatchdog getting triggered, but the endless loop would.This fixes issues observed during system reboot/shutdown when supplicantgot hung for some reason or gets crashed/killed which lead to clientgetting hung in an unkillable state. It in turn lead to system being inhung up state requiring hard power off/on to recover.The Linux kernel CVE team has assigned CVE-2025-21871 to this issue.
 openEuler评分：
  5.5
 Vector：CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP4:受影响
2.openEuler-22.03-LTS-SP3(5.10.0):受影响
3.openEuler-22.03-LTS-SP4(5.10.0):受影响
4.openEuler-24.03-LTS:受影响
5.openEuler-24.03-LTS-SP1:受影响
6.openEuler-24.03-LTS-SP2:不受影响
7.master(6.12.33):不受影响
8.openEuler-24.03-LTS-Next:不受影响
9.openEuler-24.03-LTS-SP3:不受影响

修复是否涉及abi变化(是/否)：
  1.master(6.12.33):否
2.openEuler-20.03-LTS-SP4: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:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否
8.openEuler-24.03-LTS-SP2:否
9.openEuler-24.03-LTS-SP3:否

原因说明：
  1.openEuler-24.03-LTS:正常修复
2.openEuler-24.03-LTS-SP1:正常修复
3.openEuler-24.03-LTS-SP2:不受影响-漏洞代码不能被攻击者触发
4.openEuler-20.03-LTS-SP4:不修复-超出修复范围
5.openEuler-22.03-LTS-SP3(5.10.0):不修复-超出修复范围
6.openEuler-22.03-LTS-SP4(5.10.0):不修复-超出修复范围
7.master(6.12.33):不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
9.openEuler-24.03-LTS-SP3:不受影响-漏洞代码不能被攻击者触发

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