PT-2025-18869 · Linux+5 · Linux Kernel+5

Published 2023-11-07 · Updated 2026-05-26 · CVE-2023-53105

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 identified in the Linux kernel, specifically in the net/mlx5e module. This issue occurs when a module is unloaded while a peer tc flow is still offloaded, causing the neigh encap lock to be destroyed. As a result, when the original non-peer tc flow is deleted, it attempts to take the already destroyed encap lock, leading to a null pointer dereference. The issue is resolved by clearing peer flows during tc eswitch cleanup.

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

AZL-69923

CESA-2023_7077

CVE-2023-53105

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

Centos

Debian

Linux Kernel

Red Hat

Red Os

Suse

References · 429

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53105.json · Exploit
• https://ubuntu.com/security/CVE-2023-53105 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53105 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53105 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53105 · Security Note
• https://osv.dev/vulnerability/CVE-2023-53105 · Vendor Advisory
• https://git.kernel.org/stable/c/c9668f0b1d28570327dbba189f2c61f6f9e43ae7 · Patch
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2023-53105 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53105 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:02173-1 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-69923 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:01966-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53105 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53105 · Vendor Advisory
• https://git.kernel.org/stable/c/b7350f8dbe0c2a1d4d3ad7c35b610abd3cb91750 · Patch