CVE-2022-1263 Null dereference in Kernel:KVM

What is CVE-2022-1263?

CVE-2022-1263 is a medium-severity vulnerability in Linux kernel, published on 31 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-476

Which versions are affected by CVE-2022-1263?

It affects 2 products.

Products include Linux kernel, Redhat Enterprise Linux.

How do I fix CVE-2022-1263?

Apply the vendor's patch.

Is CVE-2022-1263 being exploited?

There is no known exploitation of CVE-2022-1263 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-10820, DEBIAN-CVE-2022-1263, GHSA-wcwj-rgxv-c28p, UBUNTU-CVE-2022-1263.