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CVE-2022-1263

Date: August 31, 2022

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.

Severity Score

Related Resources (8)

https://www.openwall.com/lists/oss-security/2022/04/07/1
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-1263
https://bugzilla.redhat.com/show_bug.cgi?id=2072698
https://access.redhat.com/security/cve/CVE-2022-1263
https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4
https://nvd.nist.gov/vuln/detail/CVE-2022-1263
https://security-tracker.debian.org/tracker/CVE-2022-1263
https://www.mend.io/vulnerability-database/CVE-2022-1263

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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