NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package kernel-cross-headers (opens in a new tab)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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-CENTOS9-KERNELCROSSHEADERS-7307197
- published21 Jun 2024
- disclosed19 Jun 2024
Introduced: 19 Jun 2024
CVE-2024-38543 (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-cross-headers package and not the kernel-cross-headers package as distributed by Centos.
In the Linux kernel, the following vulnerability has been resolved:
lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure
The kcalloc() in dmirror_device_evict_chunk() will return null if the physical memory has run out. As a result, if src_pfns or dst_pfns is dereferenced, the null pointer dereference bug will happen.
Moreover, the device is going away. If the kcalloc() fails, the pages mapping a chunk could not be evicted. So add a __GFP_NOFAIL flag in kcalloc().
Finally, as there is no need to have physically contiguous memory, Switch kcalloc() to kvcalloc() in order to avoid failing allocations.
References
- https://access.redhat.com/security/cve/CVE-2024-38543
- https://git.kernel.org/stable/c/1a21fdeea502658e315bd939409b755974f4fb64
- https://git.kernel.org/stable/c/3b20d18f475bd17309db640dbe7d7c7ebb5bc2bc
- https://git.kernel.org/stable/c/65e528a69cb3ed4a286c45b4afba57461c8b5b33
- https://git.kernel.org/stable/c/c2af060d1c18beaec56351cf9c9bcbbc5af341a3
- https://git.kernel.org/stable/c/ce47e8ead9a72834cc68431d53f8092ce69bebb7