Resource Leak in Linux Kernel cx25821 Driver

Publication date: 2026-05-06

Last updated on: 2026-05-11

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: media: cx25821: Fix a resource leak in cx25821_dev_setup() Add release_mem_region() if ioremap() fails to release the memory region obtained by cx25821_get_resources().

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-06

Last Modified

2026-05-11

Generated

2026-07-06

AI Q&A

2026-05-06

EPSS Evaluated

2026-07-05

NVD

CVE-2026-43183

EUVD

EUVD-2026-27745

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 6.2 (inc) to 6.6.128 (exc)
linux	linux_kernel	From 6.7 (inc) to 6.12.75 (exc)
linux	linux_kernel	From 6.13 (inc) to 6.18.16 (exc)
linux	linux_kernel	From 6.19 (inc) to 6.19.6 (exc)
linux	linux_kernel	From 5.11 (inc) to 5.15.202 (exc)
linux	linux_kernel	From 5.16 (inc) to 6.1.165 (exc)
linux	linux_kernel	From 2.6.32 (inc) to 5.10.252 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-401	The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

Attack-Flow Graph

Executive Summary

This vulnerability is a resource leak in the Linux kernel's media driver for cx25821 devices. Specifically, the function cx25821_dev_setup() did not properly release a memory region if the ioremap() call failed. The fix involves adding a call to release_mem_region() to ensure that the memory region obtained by cx25821_get_resources() is released when ioremap() fails.

Impact Analysis

A resource leak in the kernel can lead to inefficient use of system resources, potentially causing system instability or degraded performance over time. If memory regions are not properly released, it could eventually exhaust available resources, affecting the reliability of the system.

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