PT-2025-13322 · Linux+4 · Linux Kernel+4

Published 2023-02-03 · Updated 2025-09-29 · CVE-2023-52976

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 potential NULL dereference issue has been identified in the Linux kernel, specifically in the efi mem reserve persistent function. The issue occurs when iterating on a linked list and a result of memremap is dereferenced without checking it for NULL. This could potentially lead to a crash or other unexpected behavior. The problem was discovered by the Linux Verification Center using SVACE.

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

Exploit

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2025_16880

BDU:2025-06247

CVE-2023-52976

OPENSUSE-SU-2025_1195-1

RHSA-2024:2394

RHSA-2024_2394

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1195-1

SUSE-SU-2025:1241-1

SUSE-SU-2025_1195-1

SUSE-SU-2025_1241-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Red Os

Suse

References · 1337

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52976.json · Exploit
• https://git.kernel.org/stable/c/87d4ff18738fd71e7e3c10827c80257da6283697 · Patch
• https://git.kernel.org/stable/c/d92a25627bcdf264183670da73c9a60c0bac327e · Patch
• https://git.kernel.org/stable/c/966d47e1f27c45507c5df82b2a2157e5a4fd3909 · Patch
• https://git.kernel.org/stable/c/a2e6a9ff89f13666a1c3ff7195612ab949ea9afc · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-52976 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-52976 · Vendor Advisory
• https://git.kernel.org/stable/c/d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c · Patch
• https://cve.org/CVERecord?id=CVE-2023-52976 · Security Note
• https://bdu.fstec.ru/vul/2025-06247 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-52976 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-52976 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory