CVE-2024-56665

一、漏洞信息
 漏洞编号：[CVE-2024-56665](https://nvd.nist.gov/vuln/detail/CVE-2024-56665)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.4.0,6.6.0
 CVSS V3.0分值：
  BaseScore：5.5 Medium
  Vector：CVSS：3.0/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:bpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_progSyzbot reported [1] crash that happens for following tracing scenario:  - create tracepoint perf event with attr.inherit=1, attach it to the    process and set bpf program to it  - attached process forks -> chid creates inherited event    the new child event shares the parent s bpf program and tp_event    (hence prog_array) which is global for tracepoint  - exit both process and its child -> release both events  - first perf_event_detach_bpf_prog call will release tp_event->prog_array    and second perf_event_detach_bpf_prog will crash, because    tp_event->prog_array is NULLThe fix makes sure the perf_event_detach_bpf_prog checks prog_arrayis valid before it tries to remove the bpf program from it.[1] https://lore.kernel.org/bpf/Z1MR6dCIKajNS6nU@krava/T/#m91dbf0688221ec7a7fc95e896a7ef9ff93b0b8ad
 漏洞公开时间：2024-12-27 23:15:26
 漏洞创建时间：2024-12-27 23:57:14
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-56665
<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/842e5af282453983586e2eae3c8eaf252de5f22f |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/978c4486cca5c7b9253d3ab98a88c8e769cb9bbd |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/c2b6b47662d5f2dfce92e5ffbdcac8229f321d9d |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/dfb15ddf3b65e0df2129f9756d1b4fa78055cdb3 |  |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-56665 |

</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>

无
</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:bpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_progSyzbot reported [1] crash that happens for following tracing scenario:  - create tracepoint perf event with attr.inherit=1, attach it to the    process and set bpf program to it  - attached process forks -> chid creates inherited event    the new child event shares the parent s bpf program and tp_event    (hence prog_array) which is global for tracepoint  - exit both process and its child -> release both events  - first perf_event_detach_bpf_prog call will release tp_event->prog_array    and second perf_event_detach_bpf_prog will crash, because    tp_event->prog_array is NULLThe fix makes sure the perf_event_detach_bpf_prog checks prog_arrayis valid before it tries to remove the bpf program from it.[1] https://lore.kernel.org/bpf/Z1MR6dCIKajNS6nU@krava/T/#m91dbf0688221ec7a7fc95e896a7ef9ff93b0b8ad
 openEuler评分：
  5.5
 Vector：CVSS：3.0/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-24.03-LTS:受影响
2.openEuler-24.03-LTS-SP1:受影响
3.openEuler-20.03-LTS-SP4(4.19.90):不受影响
4.openEuler-22.03-LTS-SP1:不受影响
5.openEuler-22.03-LTS-SP3:不受影响
6.openEuler-22.03-LTS-SP4:不受影响
7.master:不受影响
8.openEuler-24.03-LTS-Next:不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP4(4.19.90):否
2.openEuler-22.03-LTS-SP1:否
3.openEuler-22.03-LTS-SP3:否
4.master:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-22.03-LTS-SP4:否
8.openEuler-24.03-LTS-SP1: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-20.03-LTS-SP4(4.19.90):不受影响-漏洞代码不存在
4.openEuler-22.03-LTS-SP1:不受影响-漏洞代码不存在
5.openEuler-22.03-LTS-SP3:不受影响-漏洞代码不存在
6.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
7.master:不受影响-漏洞代码不存在
8.openEuler-24.03-LTS-Next: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-2025-1036

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