Memory Leak The advisory has been revoked - it doesn't affect any version of package kernel-rt-64k (opens in a new tab)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-KERNELRT64K-10462467
- published20 Jun 2025
- disclosed18 Jun 2025
Introduced: 18 Jun 2025
CVE-2022-50226 (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-rt-64k package and not the kernel-rt-64k package as distributed by Centos.
In the Linux kernel, the following vulnerability has been resolved:
crypto: ccp - Use kzalloc for sev ioctl interfaces to prevent kernel memory leak
For some sev ioctl interfaces, input may be passed that is less than or equal to SEV_FW_BLOB_MAX_SIZE, but larger than the data that PSP firmware returns. In this case, kmalloc will allocate memory that is the size of the input rather than the size of the data. Since PSP firmware doesn't fully overwrite the buffer, the sev ioctl interfaces with the issue may return uninitialized slab memory.
Currently, all of the ioctl interfaces in the ccp driver are safe, but to prevent future problems, change all ioctl interfaces that allocate memory with kmalloc to use kzalloc and memset the data buffer to zero in sev_ioctl_do_platform_status.
References
- https://access.redhat.com/security/cve/CVE-2022-50226
- https://git.kernel.org/stable/c/13dc15a3f5fd7f884e4bfa8c011a0ae868df12ae
- https://git.kernel.org/stable/c/4c5300f6f5e18b11c02a92f136e69b98fddba15e
- https://git.kernel.org/stable/c/caa395aa16e7c9193fd7fa6cde462dd8229d4953
- https://git.kernel.org/stable/c/e11fb0a3a39bb42da35fa662c46ce7391f277436
- https://git.kernel.org/stable/c/f2a920daa780956b987c14b9f23de7c3c8915bf2