Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.8, < 5.10.178 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/176c6b4889195fbe7016d9401175b48c5c9edf68Patch
- https://git.kernel.org/stable/c/1eb65c8687316c65140b48fad27133d583178e15Patch
- https://git.kernel.org/stable/c/8c3f0ae5435fd20bb1e3a8308488aa6ac33151eePatch
- https://git.kernel.org/stable/c/a5c44f3446a0565139b7d8abc78f58b86c398123Patch
- https://git.kernel.org/stable/c/c373e49fbb87aa177819866ed9194ebc5414dfd6Patch
FAQ
What is CVE-2023-53273?
CVE-2023-53273 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 ...
How severe is CVE-2023-53273?
CVE-2023-53273 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-53273?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.