Race Condition The advisory has been revoked - it doesn't affect any version of package kernel-cross-headers (opens in a new tab)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.
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Test your applications- Snyk IDSNYK-RHEL9-KERNELCROSSHEADERS-11596906
- published9 Aug 2025
- disclosed17 Aug 2024
Introduced: 17 Aug 2024
CVE-2024-43856 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL: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 RHEL.
In the Linux kernel, the following vulnerability has been resolved:
dma: fix call order in dmam_free_coherent
dmam_free_coherent() frees a DMA allocation, which makes the freed vaddr available for reuse, then calls devres_destroy() to remove and free the data structure used to track the DMA allocation. Between the two calls, it is possible for a concurrent task to make an allocation with the same vaddr and add it to the devres list.
If this happens, there will be two entries in the devres list with the same vaddr and devres_destroy() can free the wrong entry, triggering the WARN_ON() in dmam_match.
Fix by destroying the devres entry before freeing the DMA allocation.
kokonut //net/encryption http://sponge2/b9145fe6-0f72-4325-ac2f-a84d81075b03
References
- https://access.redhat.com/security/cve/CVE-2024-43856
- https://git.kernel.org/stable/c/1fe97f68fce1ba24bf823bfb0eb0956003473130
- https://git.kernel.org/stable/c/22094f5f52e7bc16c5bf9613365049383650b02e
- https://git.kernel.org/stable/c/257193083e8f43907e99ea633820fc2b3bcd24c7
- https://git.kernel.org/stable/c/28e8b7406d3a1f5329a03aa25a43aa28e087cb20
- https://git.kernel.org/stable/c/2f7bbdc744f2e7051d1cb47c8e082162df1923c9
- https://git.kernel.org/stable/c/87b34c8c94e29fa01d744e5147697f592998d954
- https://git.kernel.org/stable/c/f993a4baf6b622232e4c190d34c220179e5d61eb
- https://git.kernel.org/stable/c/fe2d246080f035e0af5793cb79067ba125e4fb63