CVE-2023-53636 — Use After Free in Linux

CWE-416 — Use After Free5 documents5 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 96.62%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedOct 7

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 a…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶NVDlinux/linux_kernel6.1 — 6.1.28+2
▶Debianlinux/linux_kernel< 6.1.37-1+2
▶CVEListV5linux/linuxb56bae2dd6fda6baf3bb74af3812676eebdd52f2 — 5b4052aa956e11bcd19e50ca559eb38dcb46201b+4
▶debiandebian/linux< linux 6.1.37-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
OSV
CVE-2023-53636: In the Linux kernel, the following vulnerability has been resolved: clk: microchip: fix potential UAF in auxdev release callback Similar to commit 1c1↗2025-10-07
▶
GHSA
GHSA-w939-vjpg-j262: In the Linux kernel, the following vulnerability has been resolved: clk: microchip: fix potential UAF in auxdev release callback Similar to commit 1↗2025-10-07
▶

📋Vendor Advisories

2
Red Hat
kernel: clk: microchip: fix potential UAF in auxdev release callback↗2025-10-07
▶
Debian
CVE-2023-53636: linux - In the Linux kernel, the following vulnerability has been resolved: clk: microc...↗2023
▶