CVE-2026-97933— Linux内核追踪子系统引用计数缺陷
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
在 Linux 内核中，已修复以下漏洞： 跟踪（tracing）：打开追踪器选项文件时，正确获取 trace_array 的引用计数 当打开一个追踪器选项文件时，系统会传递一个描述符，该描述符指向 的 数组中的某个元素。该元素包含用于定位 及其他相关信息。系统原本依赖此元素来获取 的引用计数，从而确保在该文件打开期间， 不会被移除。 然而，存在一个竞态条件：在移除代表该 的实例时，该元素本身可能被释放，从而导致“使用后释放”（use-after-free）漏洞。因为用于查找 以增加其引用计数的元素，在实例被移除的同
可能的 ATT&CK 技术 1 AI
T1564.004 · NTFS File Attributes影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 7e2cfbd2d3c86afcd5c26b5c4b1dd251f63c5838< b2890064a12efbeb3b3c093e69e9010dd244c881 |
affected |
7e2cfbd2d3c86afcd5c26b5c4b1dd251f63c5838< b2fb87d29ffb3a7a9ccc5acf12898ecb80587427 |
affected | ||
7e2cfbd2d3c86afcd5c26b5c4b1dd251f63c5838< ed0aff60f83a9bdc2f6556376ac79c96b3ce7e80 |
affected | ||
952e477f908048145a5eb2ed3d431d9efc1e1073 |
affected | ||
b3183f5f05cd867f5c17122773ca5aa8d07b51af |
affected | ||
bf38c1d29f8bfe9631b62a67f8dd1b8f7efb7139 |
affected | ||
2617afde0c3db285778734b0ccad9a55b4f9cda2 |
affected | ||
586787a0331aa2d7d244e9c4400d2a73295b0cf0 |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2026-97933 基础信息
漏洞信息
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Vulnerability Title
tracing: Take trace_array reference when opening a tracer options file
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
tracing: Take trace_array reference when opening a tracer options file
When a tracer option file is opened, it is passed a descriptor that points
to an element on the trace_array's topts array. This element has
information to find the trace array and other information. It uses this
element to take a reference of the trace_array so that the trace_array
does not get removed while this file is opened.
Unfortunately, there's a race condition where the element itself could be
freed by the removal of the instance the trace_array represents causing a
use-after-free as this element that is used to find the trace_array to
increment its reference counter is also freed when the instance is
removed.
To solve this, add a trace_array_tracer_options_get() helper function that
will take the address of the element that is passed to the open function
by the inode->i_private pointer and search all the trace_arrays under a
lock to find the one that the element's address is in the range of the
trace_arrays topts array elements. When a match happens, that trace_array's
reference would be increased.
Note, there's a race where if an admin was deleting and creating trace
instances at the same time and the memory of the old trace_array's array
matched the memory of the new trace_array that it could in theory open the
option from the wrong trace array. But we do not care because it would be
stupid to perform that kind of action. As long as the only thing that can
happen is that the option from the wrong trace array is used and doesn't
crash the kernel it will only make the user confused. But if they are
doing something stupid like this, they are already confused, so no harm
done.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-97933 的公开POC
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|---|
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CVE-2026-97933 补丁与修复 (3)
同批安全公告 · Linux · 2026-09-25 · 共 372 条
| CVE-2026-100075 | 9.8 CRITICAL | RDMA/srpt：srpt_alloc_rw_ctxs() 未释放计数器修复 |
| CVE-2026-97555 | 8.8 HIGH | smb客户端：修复DACL所有者/组重写中的堆溢出漏洞 |
| CVE-2026-97957 | 8.8 HIGH | hinic 邮箱段缓冲区溢出漏洞 |
| CVE-2026-97527 | 8.8 HIGH | qla2xxx SCSI驱动程序 NVMe未解决上下文列表竞争条件漏洞 |
| CVE-2026-97528 | 8.8 HIGH | QLogic qla2xxx驱动LS拒绝错误NVMe内存泄漏漏洞 |
| CVE-2026-98115 | 8.8 HIGH | ksmbd 注销期间会话安全排空漏洞 |
| CVE-2026-97525 | 8.2 HIGH | x86/mm/pat：内核页表分裂页表分配漏洞 |
| CVE-2026-98069 | 8.1 HIGH | Net/RDS rds_conn_shutdown() 快速路径锁获取漏洞 |
| CVE-2026-97573 | 8.1 HIGH | bnxt_en 驱动 bnxt_rx_ring_reset 缓冲区分配失败漏洞 |
| CVE-2026-97570 | 8.1 HIGH | bnxt_en: 修复因SW TPA ID绑定问题导致的崩溃漏洞 |
| CVE-2026-98130 | 8.1 HIGH | SCTP定时器启动竞争条件漏洞 |
| CVE-2026-98070 | 8.1 HIGH | Linux RDS 模块远程代码执行漏洞 |
| CVE-2026-98122 | 7.8 HIGH | Linux内核vxlan mdb远程源删除后使用漏洞 |
| CVE-2026-97575 | 7.8 HIGH | v4l2-ctrls AV1瓦片计数验证漏洞 |
| CVE-2026-97576 | 7.8 HIGH | V4L2-ctrls HEVC 瓦片计数验证漏洞 |
| CVE-2026-98112 | 7.8 HIGH | ksmbd 网络接口事件中监听器任务生命周期修复漏洞 |
| CVE-2026-98002 | 7.8 HIGH | AMD IOMMU 嵌套域分配中错误检查失效漏洞 |
| CVE-2026-98116 | 7.8 HIGH | ALSA: PCM内存映射与缓冲区重新分配序列化以修复页面UAF漏洞 |
| CVE-2026-97580 | 7.8 HIGH | rkvdec HEVC解析数组越界漏洞 |
| CVE-2026-97940 | 7.8 HIGH | IPv6 修复 fib6 遍历器在 seq 停止时存在 UAF 漏洞 |
显示前 20 条，共 372 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-97933
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