CVE-2023-6931

Out-of-bounds write in Linux kernel's Performance Events system component

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.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.21%
Third-Party Advisory debian.org Third-Party Advisory debian.org
Affected: Linux Kernel
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1b patch mailing list
https://kernel.dance/382c27f4ed28f803b1f1473ac2d8db0afc795a1b patch
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2023-6931?
CVE-2023-6931 has been scored as a high severity vulnerability.
How to fix CVE-2023-6931?
To fix CVE-2023-6931, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-6931 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-6931 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-6931?
CVE-2023-6931 affects Linux Kernel.
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