PT-2024-14769 · Linux+4 · Linux Kernel+4

Li Lingfeng · Published 2023-11-07 · Updated 2026-05-26 · CVE-2023-52837

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 A use-after-free (UAF) issue has been resolved in the Linux kernel. The issue occurs when someone tries to open an nbd device right after nbd put(), since nbd has been freed in nbd dev remove(). This is due to the disk being cleaned up by blk cleanup disk(), which does not set disk->private data to NULL as before. The fix involves implementing ->free disk and freeing private data in it.

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

Exploit

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALSA-2025_12746

ALSA-2025_12752

ALSA-2025_12753

ALSA-2025_16880

AZL-55636

BDU:2025-07505

CVE-2023-52837

INFSA-2024_9315

OESA-2024-1679

OESA-2024-1680

OESA-2024-1681

OPENSUSE-SU-2024_2372-1

OPENSUSE-SU-2024_2394-1

RHSA-2024:9315

RHSA-2024_9315

SUSE-SU-2024:2372-1

SUSE-SU-2024:2385-1

SUSE-SU-2024:2394-1

SUSE-SU-2024:2495-1

SUSE-SU-2024:2571-1

SUSE-SU-2024:2896-1

SUSE-SU-2024:2939-1

SUSE-SU-2024:2973-1

SUSE-SU-2025:20008-1

SUSE-SU-2025:20028-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Red Os

Suse

References · 2667

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52837.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2024:2385-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-52837 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-36006 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-35848 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:2495-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-26961 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-52854 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:2939-1 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2024-1680 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-52844 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-52867 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-27427 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-35898 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2023-52837 · Vendor Advisory