CVE-2023-53636

HIGH

Linux Kernel - Use-After-Free in Microchip Clock Auxiliary Device Release Callback

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: clk: microchip: fix potential UAF in auxdev release callback Similar to commit 1c11289b34ab ("peci: cpu: Fix use-after-free in adev_release()"), the auxiliary device is not torn down in the correct order. If auxiliary_device_add() fails, the release callback will be called twice, resulting in a UAF. Due to timing, the auxdev code in this driver "took inspiration" from the aforementioned commit, and thus its bugs too! Moving auxiliary_device_uninit() to the unregister callback instead avoids the issue.

Scores

CVSS v3 7.8
EPSS 0.0018
EPSS Percentile 8.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (11)
Linux/Linux < 6.1
Linux/Linux 6.1
Linux/Linux 6.1.28 - 6.1.*
Linux/Linux 6.2.15 - 6.2.*
Linux/Linux 6.3.2 - 6.3.*
Linux/Linux 6.4
Linux/Linux b56bae2dd6fda6baf3bb74af3812676eebdd52f2 - 5b4052aa956e11bcd19e50ca559eb38dcb46201b
Linux/Linux b56bae2dd6fda6baf3bb74af3812676eebdd52f2 - 7455b7007b9e93bcc2bc9c1c6c73a228e3152069
Linux/Linux b56bae2dd6fda6baf3bb74af3812676eebdd52f2 - 934406b2d42eaf3fc57f5546cc68ff7ab9680bb3
Linux/Linux b56bae2dd6fda6baf3bb74af3812676eebdd52f2 - d7d6dacf39ed102d7667721ca1700022c9c8b11a
... and 1 more
Published Oct 07, 2025
Tracked Since Feb 18, 2026