CVE-2026-43231

Description

In the Linux kernel, the following vulnerability has been resolved: media: radio-keene: fix memory leak in error path Fix a memory leak in usb_keene_probe(). The v4l2 control handler is initialized and controls are added, but if v4l2_device_register() or video_register_device() fails afterward, the handler was never freed, leaking memory. Add v4l2_ctrl_handler_free() call in the err_v4l2 error path to ensure the control handler is properly freed for all error paths after it is initialized.

CVSS v3.1 Score

5.5

MEDIUM

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

EPSS — Exploit Prediction

0.0001

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
linux	linux_kernel	3.4 — 5.10.252
linux	linux_kernel	5.11 — 5.15.202
linux	linux_kernel	5.16 — 6.1.165
linux	linux_kernel	6.2 — 6.6.128
linux	linux_kernel	6.7 — 6.12.75
linux	linux_kernel	6.13 — 6.18.16
linux	linux_kernel	6.19 — 6.19.6

References

Advisories & Patches

https://git.kernel.org/stable/c/1d8558a232ecb187e8e0328d6347a125f437a0fc https://git.kernel.org/stable/c/242b0aabb1866024a7995a767ac330c158b39aa4 https://git.kernel.org/stable/c/27c508f61963013fdf29097578284099ee7a85a4 https://git.kernel.org/stable/c/2fe28a63d598235595a9601e0d8fdc7c8f4fd575 https://git.kernel.org/stable/c/7fa9754f48cb8eefa566156be341e63d313247e5 https://git.kernel.org/stable/c/ad85bb5623079a35bd400f51de2e2fbc2170bdb2 https://git.kernel.org/stable/c/b8bf939d77c0cd01118e953bbf554e0fa15e9006 https://git.kernel.org/stable/c/de204d87e7d61859937272fe30cbdd46a4cfb10a

Frequently Asked Questions

What is CVE-2026-43231? +

In the Linux kernel, the following vulnerability has been resolved: media: radio-keene: fix memory leak in error path Fix a memory leak in usb_keene_probe(). The v4l2 control handler is initialized and controls are added, but if v4l2_device_register() or video_register_device() fails afterward, the handler was never freed, leaking memory. Add v4l2_ctrl_handler_free() call in the err_v4l2 error path to ensure the control handler is properly freed for all error paths after it is initialized. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-43231? +

CVE-2026-43231 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0001, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-43231? +

CVE-2026-43231 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-43231? +

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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