PT-2025-37871 · Linux+3 · Linux Kernel+3

Published 2023-02-24 · Updated 2025-09-29 · CVE-2023-53266

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 memory leak in the ffh ctxt structure within the ACPI subsystem on ARM64 architectures was addressed. The leak occurs when SMCCC version and conduit checks fail, resulting in an allocated memory block not being freed.

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

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

ALSA-2025_16880

BDU:2026-03893

CESA-2024_3138

CVE-2023-53266

RHSA-2024:3138

RHSA-2024_3138

Affected Products

Astra Linux

Centos

Linux Kernel

Red Hat

References · 18

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53266.json · Exploit
• https://bdu.fstec.ru/vul/2026-03893 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-53266 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53266 · Vendor Advisory
• https://git.kernel.org/stable/c/1b561d3949f8478c5403c9752b5533211a757226 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53266 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53266 · Vendor Advisory
• https://git.kernel.org/stable/c/7521da2eb42d65f89f511b7912d3757cf3d9168a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-53266 · Security Note
• https://osv.dev/vulnerability/CVE-2023-53266 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53266 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53266 · Security Note
• https://docs.bell-sw.com/security/cves/CVE-2023-53266 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://twitter.com/CVEnew/status/1969291968631930978 · Twitter Post