Vulnerabilities > CVE-2022-1263 - NULL Pointer Dereference vulnerability in multiple products
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://access.redhat.com/security/cve/CVE-2022-1263
- https://access.redhat.com/security/cve/CVE-2022-1263
- https://bugzilla.redhat.com/show_bug.cgi?id=2072698
- https://bugzilla.redhat.com/show_bug.cgi?id=2072698
- https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4
- https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4
- https://www.openwall.com/lists/oss-security/2022/04/07/1
- https://www.openwall.com/lists/oss-security/2022/04/07/1