PT-2025-41080 · Microchip+1 · Microchip Clock Driver+1

Published 2023-04-13 · Updated 2025-10-08 · CVE-2023-53636

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description A use-after-free issue exists in the auxiliary device release callback within the Microchip clock driver. This occurs because the auxiliary device is not torn down in the correct order. If auxiliary device add() fails, the release callback is called twice, leading to a use-after-free condition. The issue is similar to a previously resolved problem in the PECI CPU driver. Moving auxiliary device uninit() to the unregister callback resolves the problem.

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

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2026-03839

CVE-2023-53636

Affected Products

Linux Kernel

Microchip Clock Driver

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53636.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53636 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53636 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53636 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53636 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53636 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-53636 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53636 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-03839 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-53636 · Security Note
• https://git.kernel.org/stable/c/934406b2d42eaf3fc57f5546cc68ff7ab9680bb3 · Note
• https://git.kernel.org/stable/c/5b4052aa956e11bcd19e50ca559eb38dcb46201b · Note
• https://git.kernel.org/linus/7455b7007b9e93bcc2bc9c1c6c73a228e3152069 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.15 · Note