PT-2025-49476 · Linux+3 · Linux Kernel+3

CVE-2023-53746 · Published 2023-03-20 · Updated 2026-06-30

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

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

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

Description A memory leak exists in the vfio ap device driver within the Linux kernel. The device release callback function incorrectly attempts to free memory associated with a vfio matrix dev object. Specifically, the dev get drvdata(device *dev) function does not retrieve the correct pointer to the object, resulting in the memory not being freed. The kfree function handles the NULL pointer gracefully, preventing a crash, but leaving the memory allocated. The affected component is the vfio ap device driver.

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

Exploit

Improper Resource Release

NULL Pointer Dereference

Weakness Enumeration

CWE-404

CWE-476

Related Identifiers

BDU:2026-10425

CVE-2023-53746

RHSA-2023:6583

RHSA-2024:3138

SUSE-SU-2026:0263-1

SUSE-SU-2026:0316-1

SUSE-SU-2026:0317-1

SUSE-SU-2026:0411-1

SUSE-SU-2026:0617-1

Affected Products

Centos

Linux Kernel

Red Hat

Red Os

References · 1119

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53746.json · Exploit
• https://cve.org/CVERecord?id=CVE-2023-53746 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:0263-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53746 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53746 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53746 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0317-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0411-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53746 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0316-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-10425 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-53746 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53746 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:0617-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53746 · Vendor Advisory