CVE-2026-74291
In the Linux kernel, the following vulnerability has been resolved: ASoC: topology: Check PCM and DAI name strings before use Topology objects store several PCM and DAI names in fixed-size UAPI arrays. Other topology parser paths validate these fields with bounded strnlen() checks before using them as C strings, but the PCM and DAI paths still pass some fixed-size arrays directly to strlen(), devm_kstrdup(), DAI lookup, and diagnostic prints. A malformed topology blob with a non-NUL-terminated PCM, DAI, or stream capability name can therefore make the parser read past the end of the fixed-size field. Reject unterminated PCM and DAI name fields before consuming them as C strings.
Affected versions
Linux kernel versions
4.6
and later are affected. Fixed in
6.6.158,
6.12.111,
6.18.53,
7.1.5,
7.2
and their respective stable series.
References
5 totalFrequently asked questions
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What is CVE-2026-74291?
CVE-2026-74291 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.6 onward and has been patched in 6.6.158, 6.12.111, 6.18.53 and others. CVE-2026-74291 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-74291?
Yes. CVE-2026-74291 has been patched. Fixed versions include 6.6.158, 6.12.111, 6.18.53 and others. If you are running Linux kernel 4.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74291 actively exploited?
No. CVE-2026-74291 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.