CVE-2023-53636
Severity CVSS v4.0:
Pending analysis
Type:
CWE-416
Use After Free
Publication date:
07/10/2025
Last modified:
03/02/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
clk: microchip: fix potential UAF in auxdev release callback<br />
<br />
Similar to commit 1c11289b34ab ("peci: cpu: Fix use-after-free in<br />
adev_release()"), the auxiliary device is not torn down in the correct<br />
order. If auxiliary_device_add() fails, the release callback will be<br />
called twice, resulting in a UAF. Due to timing, the auxdev code in this<br />
driver "took inspiration" from the aforementioned commit, and thus its<br />
bugs too!<br />
<br />
Moving auxiliary_device_uninit() to the unregister callback instead<br />
avoids the issue.
Impact
Base Score 3.x
7.80
Severity 3.x
HIGH
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.1 (including) | 6.1.28 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.2 (including) | 6.2.15 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.3 (including) | 6.3.2 (excluding) |
To consult the complete list of CPE names with products and versions, see this page