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A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediat…

高危 CVSS 7.8
CVECVE-2023-3609
首次发现2026-07-30 20:31 UTC
披露时间2023-07-21 21:15 UTC
最后更新2026-07-30 20:31 UTC
通道状态auto

摘要

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 04c55383f…

中文摘要建设中，暂以英文摘要呈现（DR-003 v2）。

深度研判 · 自动通道

该漏洞尚未生成深度研判报告（DR-003 v2 AI pipeline 建设中）。

受影响产品

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Lint 边界警告 (6)

以下是本次研判 lint 阶段发现的非阻塞性警告（如引用 URL 未在白名单内）。这些不影响漏洞条目可用性，仅为透明度披露（参 DR-002）。

  • REF_URL_NOT_ALLOWLISTED url not in allowlist: http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://kernel.dance/04c55383fa5689357bcdd2c8036725a55ed632bc
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://kernel.dance/04c55383fa5689357bcdd2c8036725a55ed632bc

数据来源

  • NVD DATABASE

原始链接

时间线

  1. nvd_ingest NVD