NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package kernel-64k-debug-devel-matched (opens in a new tab)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-RHEL9-KERNEL64KDEBUGDEVELMATCHED-13303979
- published5 Oct 2025
- disclosed16 Sept 2025
Introduced: 16 Sep 2025
CVE-2023-53273 (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-64k-debug-devel-matched package and not the kernel-64k-debug-devel-matched package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
Drivers: vmbus: Check for channel allocation before looking up relids
relid2channel() assumes vmbus channel array to be allocated when called. However, in cases such as kdump/kexec, not all relids will be reset by the host. When the second kernel boots and if the guest receives a vmbus interrupt during vmbus driver initialization before vmbus_connect() is called, before it finishes, or if it fails, the vmbus interrupt service routine is called which in turn calls relid2channel() and can cause a null pointer dereference.
Print a warning and error out in relid2channel() for a channel id that's invalid in the second kernel.
References
- https://access.redhat.com/security/cve/CVE-2023-53273
- https://git.kernel.org/stable/c/176c6b4889195fbe7016d9401175b48c5c9edf68
- https://git.kernel.org/stable/c/1eb65c8687316c65140b48fad27133d583178e15
- https://git.kernel.org/stable/c/8c3f0ae5435fd20bb1e3a8308488aa6ac33151ee
- https://git.kernel.org/stable/c/a5c44f3446a0565139b7d8abc78f58b86c398123
- https://git.kernel.org/stable/c/c373e49fbb87aa177819866ed9194ebc5414dfd6