PT-2025-18859 · Linux+5 · Linux Kernel+5

Published 2023-11-07 · Updated 2026-01-28 · CVE-2023-53095

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 NULL pointer dereference issue has been resolved in the Linux kernel. The issue is related to the LRU mechanism, which may look up a resource in the process of being removed from an object. The locking rules for res->bo assignment and bo->resource are protected by different locks, specifically the LRU lock and the object lock. To avoid dereferencing a NULL bo->resource in ttm bo swapout(), a check is performed before deciding to swap out a bo.

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

CESA-2023_7077

CVE-2023-53095

RHSA-2023:6583

RHSA-2023:7077

RHSA-2023_6583

RHSA-2023_7077

SUSE-SU-2025:01966-1

SUSE-SU-2025:02173-1

SUSE-SU-2025:2173-1

SUSE-SU-2025_02173-1

Affected Products

Astra Linux

Centos

Linux Kernel

Red Hat

Red Os

Suse

References · 426

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53095.json · Exploit
• https://ubuntu.com/security/CVE-2023-53095 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53095 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:01966-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53095 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53095 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-53095 · Vendor Advisory
• https://git.kernel.org/stable/c/9d9b1f9f7a72d83ebf173534e76b246349f32374 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53095 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02173-1 · Vendor Advisory
• https://git.kernel.org/stable/c/9ba1720f6c4a0f13c3f3cb5c28132ee75555d04f · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53095 · Vendor Advisory
• https://git.kernel.org/stable/c/9a9a8fe26751334b7739193a94eba741073b8a55 · Patch
• https://osv.dev/vulnerability/CVE-2023-53095 · Vendor Advisory
• https://suse.com/security/cve/CVE-2022-49901 · Note