PT-2023-9744 · Linux+3 · Linux Kernel+3

Published 2023-10-31 · Updated 2025-02-03 · CVE-2023-52851

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Description The issue is related to a use-after-free error in the IB/mlx5 component of the Linux kernel. This error occurs when the workqueue allocation fails and returns NULL in mlx5 mkey cache init(), leading to a double free of the same QP. The vulnerability can be exploited to potentially elevate privileges in the system. The error is reported by Syzkaller in the ib destroy qp user function.

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

Exploit

Use After Free

Double Free

Weakness Enumeration

CWE-416

CWE-415

Related Identifiers

BDU:2024-10410

CVE-2023-52851

SUSE-SU-2024:2008-1

SUSE-SU-2024:2019-1

SUSE-SU-2024:2190-1

SUSE-SU-2024:2571-1

SUSE-SU-2024:2896-1

SUSE-SU-2024:2973-1

SUSE-SU-2025:20008-1

SUSE-SU-2025:20028-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 2483

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52851.json · Exploit
• https://osv.dev/vulnerability/BELL-CVE-2023-52851 · Vendor Advisory
• https://git.kernel.org/stable/c/437f033e30c897bb3723eac9e9003cd9f88d00a3 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:20028-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-52851 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-52851 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2571-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-52851 · Vendor Advisory
• https://git.kernel.org/stable/c/6387f269d84e6e149499408c4d1fc805017729b2 · Patch
• https://cve.org/CVERecord?id=CVE-2023-52851 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-52851 · Security Note
• https://git.kernel.org/stable/c/4f4a7a7d1404297f2a92df0046f7e64dc5c52dd9 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:20008-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2190-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2008-1 · Vendor Advisory