PT-2025-37701 · Linux+4 · Linux Kernel+4

Published 2023-06-19 · Updated 2026-04-14 · CVE-2023-53260

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

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

Description The Linux kernel contains a vulnerability where a null pointer dereference can occur in the ovl permission() function. This dereference is triggered during a specific process involving path lookupat, link path walk, inode permission, and ovl permission, ultimately leading to a kernel crash. The issue arises when ovl i path real() returns a NULL value for realinode, which is then passed to inode permission().

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2025_12746

ALSA-2025_12752

ALSA-2025_12753

ALSA-2025_16880

BDU:2026-02041

CVE-2023-53260

RHSA-2025:6966

RHSA-2025_6966

SUSE-SU-2025:03600-1

SUSE-SU-2025:03634-1

SUSE-SU-2025:20851-1

SUSE-SU-2025:20861-1

SUSE-SU-2025:20870-1

SUSE-SU-2025:20898-1

SUSE-SU-2025:3751-1

SUSE-SU-2025:4057-1

SUSE-SU-2025:4132-1

SUSE-SU-2025:4141-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Red Os

Suse

References · 1410

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53260.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2025:4057-1 · Vendor Advisory
• https://git.kernel.org/stable/c/1a73f5b8f079fd42a544c1600beface50c63af7c · Patch
• https://security-tracker.debian.org/tracker/CVE-2023-53260 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53260 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53260 · Security Note
• https://bdu.fstec.ru/vul/2026-02041 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:4141-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4132-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53260 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:03600-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53260 · Vendor Advisory
• https://git.kernel.org/stable/c/69f9ae7edf9ec0ff500429101923347fcba5c8c4 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:20851-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53260 · Vendor Advisory