NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS9-KERNELHEADERS-7199813
- published4 Jun 2024
- disclosed30 May 2024
Introduced: 30 May 2024
CVE-2024-36891 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by Centos.
In the Linux kernel, the following vulnerability has been resolved:
maple_tree: fix mas_empty_area_rev() null pointer dereference
Currently the code calls mas_start() followed by mas_data_end() if the maple state is MA_START, but mas_start() may return with the maple state node == NULL. This will lead to a null pointer dereference when checking information in the NULL node, which is done in mas_data_end().
Avoid setting the offset if there is no node by waiting until after the maple state is checked for an empty or single entry state.
A user could trigger the events to cause a kernel oops by unmapping all vmas to produce an empty maple tree, then mapping a vma that would cause the scenario described above.
References
- https://access.redhat.com/security/cve/CVE-2024-36891
- https://git.kernel.org/stable/c/6c9c7c1e63b198a8b979ad963eb21410f10ccb00
- https://git.kernel.org/stable/c/883e5d542bbdddbddeba60250cb482baf3ae2415
- https://git.kernel.org/stable/c/955a923d2809803980ff574270f81510112be9cf
- https://git.kernel.org/stable/c/f3956791cf526540addd3295e4c1e0f0442486cc