CVE-2023-53266

MEDIUM

Linux Kernel 6.2-6.2.2 - Use-After-Free in ARM64 ACPI FFH Context Handling

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: arm64: acpi: Fix possible memory leak of ffh_ctxt Allocated 'ffh_ctxt' memory leak is possible if the SMCCC version and conduit checks fail and -EOPNOTSUPP is returned without freeing the allocated memory. Fix the same by moving the allocation after the SMCCC version and conduit checks.

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/7521da2eb42d65f89f511b7912d3757cf3d9168a

Patch

https://git.kernel.org/stable/c/1b561d3949f8478c5403c9752b5533211a757226

Scores

CVSS v3 5.5

EPSS 0.0013

EPSS Percentile 2.7%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-401

Status published

Products (7)

Linux/Linux < 6.2

Linux/Linux 1d280ce099db396e092cac1aa9bf2ea8beee6d76 - 1b561d3949f8478c5403c9752b5533211a757226

Linux/Linux 1d280ce099db396e092cac1aa9bf2ea8beee6d76 - 7521da2eb42d65f89f511b7912d3757cf3d9168a

Linux/Linux 6.2

Linux/Linux 6.2.3 - 6.2.*

Linux/Linux 6.3

linux/linux_kernel 6.2 - 6.2.3

Published Sep 16, 2025

Tracked Since Feb 18, 2026