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CVE-2022-2153

Date: August 30, 2022

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.

Severity Score

Related Resources (12)

https://nvd.nist.gov/vuln/detail/CVE-2022-2153
https://bugzilla.redhat.com/show_bug.cgi?id=2069736
https://www.openwall.com/lists/oss-security/2022/06/22/1
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-2153
https://github.com/torvalds/linux/commit/7ec37d1cbe17d8189d9562178d8b29167fe1c31a
https://github.com/torvalds/linux/commit/b1e34d325397a33d97d845e312d7cf2a8b646b44
https://access.redhat.com/security/cve/CVE-2022-2153
https://security-tracker.debian.org/tracker/CVE-2022-2153
https://github.com/torvalds/linux/commit/00b5f37189d24ac3ed46cb7f11742094778c46ce
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
https://www.mend.io/vulnerability-database/CVE-2022-2153

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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