Vulnerability Description
A flaw was found in the Linux kernel’s KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. 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 |
| Fedoraproject | Fedora | 36 |
| Redhat | Enterprise Linux | 6.0 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2069736Issue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/00b5f37189d24ac3ed46cb7f11742094778c46cPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/7ec37d1cbe17d8189d9562178d8b29167fe1c31PatchThird Party Advisory
- https://github.com/torvalds/linux/commit/b1e34d325397a33d97d845e312d7cf2a8b646b4PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing ListThird Party Advisory
- https://www.openwall.com/lists/oss-security/2022/06/22/1ExploitMailing ListPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=2069736Issue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/00b5f37189d24ac3ed46cb7f11742094778c46cPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/7ec37d1cbe17d8189d9562178d8b29167fe1c31PatchThird Party Advisory
- https://github.com/torvalds/linux/commit/b1e34d325397a33d97d845e312d7cf2a8b646b4PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing ListThird Party Advisory
- https://www.openwall.com/lists/oss-security/2022/06/22/1ExploitMailing ListPatch
FAQ
What is CVE-2022-2153?
CVE-2022-2153 is a vulnerability with a CVSS score of 5.5 (MEDIUM). A flaw was found in the Linux kernel’s KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. Thi...
How severe is CVE-2022-2153?
CVE-2022-2153 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-2022-2153?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Redhat Enterprise Linux, Debian Debian Linux.