CVE-2025-38259: debian linux Use-After-Free — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: wcd9335: Fix missing free of regulator supplies Driver gets and enables all regulator supplies in probe path (wcd9335_parse_dt() and wcd9335_power_on_reset()), but does not cleanup in final error paths and in unbind (missing remove() callback). This leads to leaked memory and unbalanced regulator enable count during probe errors or unbind. Fix this by converting entire code into devm_regulator_bulk_get_enable() which also greatly simplifies the code.

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CVSS v3.1 Score

7.8

HIGH

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

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.1 — 6.1.143
linux	linux_kernel	6.2 — 6.6.96
linux	linux_kernel	6.7 — 6.12.36
linux	linux_kernel	6.13 — 6.15.5
debian	debian_linux	All

References

Advisories & Patches

https://git.kernel.org/stable/c/9079db287fc3e38e040b0edeb0a25770bb679c8e https://git.kernel.org/stable/c/9830ef1803a5bc50b4a984a06cf23142cd46229d https://git.kernel.org/stable/c/a8795f3cd289cd958f6396a1b43ba46fa8e22a2e https://git.kernel.org/stable/c/b86280aaa23c1c0f31bcaa600d35ddc45bc38b7a https://git.kernel.org/stable/c/edadaf4239c14dc8a19ea7f60b97d5524d93c29b

Other References

https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

Frequently Asked Questions

What is CVE-2025-38259? +

In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: wcd9335: Fix missing free of regulator supplies Driver gets and enables all regulator supplies in probe path (wcd9335_parse_dt() and wcd9335_power_on_reset()), but does not cleanup in final error paths and in unbind (missing remove() callback). This leads to leaked memory and unbalanced regulator enable count during probe errors or unbind. Fix this by converting entire code into devm_regulator_bulk_get_enable() which also greatly simplifies the code. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-38259? +

CVE-2025-38259 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-38259? +

CVE-2025-38259 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-38259? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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