CVE-2023-6931 HIGH

CVE-2023-6931: Out-of-bounds write in Linux kernel's Performance Events system component

Vendor Linux
Product Kernel
Weakness CWE-787
Published December 19, 2023
Last update May 12, 2026

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation. A perf_event's read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group(). We recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b.

Key dates

02Disclosure timeline

December 19, 2023 CVE published
May 12, 2026 Record updated