Vulnerability Description
A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.18 |
| Redhat | Enterprise Linux | 8.0 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2022-1263Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2072698Issue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6cPatchThird Party Advisory
- https://www.openwall.com/lists/oss-security/2022/04/07/1ExploitMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2022-1263Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2072698Issue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6cPatchThird Party Advisory
- https://www.openwall.com/lists/oss-security/2022/04/07/1ExploitMailing ListThird Party Advisory
FAQ
What is CVE-2022-1263?
CVE-2022-1263 is a vulnerability with a CVSS score of 5.5 (MEDIUM). A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, caus...
How severe is CVE-2022-1263?
CVE-2022-1263 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-2022-1263?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Redhat Enterprise Linux.