CVE-2026-43257
Analyzed Analyzed - Analysis Complete
Memory Leak in Linux Kernel cx88 Media 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: cx88: Add missing unmap in snd_cx88_hw_params() In error path, add cx88_alsa_dma_unmap() to release resource acquired by cx88_alsa_dma_map().
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Meta Information
Published
2026-05-06
Last Modified
2026-05-11
Generated
2026-06-16
AI Q&A
2026-05-06
EPSS Evaluated
2026-06-15
NVD
CVE-2026-43257
EUVD
EUVD-2026-27818
Affected Vendors & Products
Showing 7 associated CPEs
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 3.19 (inc) to 5.10.252 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-772 The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.
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Executive Summary

This vulnerability is in the Linux kernel's media subsystem, specifically in the cx88 driver. It involves a missing unmap operation in the function snd_cx88_hw_params(). In an error path, the function cx88_alsa_dma_unmap() was not called to release resources that were previously acquired by cx88_alsa_dma_map(). This means that when an error occurs, the allocated resources are not properly freed.

Impact Analysis

Because the vulnerability causes resources to not be released properly in error conditions, it can lead to resource leaks. Over time, this could degrade system performance or stability, potentially causing crashes or denial of service due to exhausted resources.

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