PT-2025-13310 · Linux+3 · Linux Kernel+3

Published 2024-04-30 · Updated 2025-10-28 · CVE-2023-52934

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:L/AC:H/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 vulnerability in the Linux kernel has been resolved, related to the mm/MADV COLLAPSE feature. The issue arises from a logical hole introduced in a commit, where !none && !huge && !bad pmds are classified as genuine pte-table-mapping-pmds, potentially allowing swap entries to leak through. The problem occurs when the pmd values are not checked again before use in pte offset map lock(), which expects a genuine pte-table-mapping-pmd. The vulnerability could lead to incorrect reporting of success in madvise collapse() when the memory isn't pmd-backed.

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

Exploit

DoS

Race Condition

Memory Leak

Weakness Enumeration

CWE-362

CWE-401

Related Identifiers

ALSA-2025_16880

BDU:2025-06317

CVE-2023-52934

RHSA-2024:2394

RHSA-2024_2394

Affected Products

Astra Linux

Linux Kernel

Red Hat

Red Os

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52934.json · Exploit
• https://git.kernel.org/stable/c/edb5d0cf5525357652aff6eacd9850b8ced07143 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2023-52934 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-52934 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-52934 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-52934 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-52934 · Security Note
• https://ubuntu.com/security/CVE-2023-52934 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-52934 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-52934 · Security Note
• https://git.kernel.org/stable/c/96aaaf8666010a39430cecf8a65c7ce2908a030f · Patch
• https://bdu.fstec.ru/vul/2025-06317 · Security Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-kernel-lt-290525 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://t.me/cveNotify/140739 · Telegram Post