CVE-2023-6931

high

Description

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.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-24-102-01

https://cert-portal.siemens.com/productcert/html/ssa-265688.html

https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html

https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html

https://kernel.dance/382c27f4ed28f803b1f1473ac2d8db0afc795a1b

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1b

Details

Source: Mitre, NVD

Published: 2023-12-19

Updated: 2024-02-01

Risk Information

CVSS v2

Base Score: 6

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High