PT-2025-13316 · Linux+3 · Linux Kernel+3

Published 2023-01-15 · Updated 2025-09-29 · CVE-2023-52940

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A crash can occur in the Linux kernel during cgroup migration due to linked list corruption in the mm struct->lru gen.list. This happens when lru gen migrate mm() is called before lru gen add mm(), which is not the expected order. The issue arises from a specific scenario involving clone(), cgroup can fork(), cgroup procs write(), cgroup post fork(), task lock(), and lru gen migrate mm() calls across multiple CPUs.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALSA-2025_16880

BDU:2025-06257

CVE-2023-52940

RHSA-2024:2394

RHSA-2024_2394

Affected Products

Astra Linux

Linux Kernel

Red Hat

Red Os

References · 20

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52940.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-52940 · Security Note
• https://git.kernel.org/stable/c/de08eaa6156405f2e9369f06ba5afae0e4ab3b62 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-52940 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-52940 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-52940 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-52940 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-52940 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-52940 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-52940 · Vendor Advisory
• https://git.kernel.org/stable/c/04448022311cebd30969d3aebdde765f1258b360 · Patch
• https://bdu.fstec.ru/vul/2025-06257 · Security Note
• https://twitter.com/CVEnew/status/1905361891725090895 · Twitter Post
• https://access.redhat.com/security/cve/CVE-2023-52940 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note