CVE-2026-63838
In the Linux kernel, the following vulnerability has been resolved: ASoC: rsnd: Fix potential out-of-bounds access of component_dais[] component_dais[RSND_MAX_COMPONENT] is initially zero-initialized and later populated in rsnd_dai_of_node(). However, the existing boundary check: if (i >= RSND_MAX_COMPONENT) does not guarantee that the last valid element remains zero. As a result, the loop can rely on component_dais[RSND_MAX_COMPONENT] being zero, which may lead to an out-of-bounds access. Found by Linux Verification Center (linuxtesting.org) with SVACE.
Affected versions
Linux kernel versions
6.6
and later are affected. Fixed in
6.6.141,
6.12.91,
6.18.33,
7.0.10,
7.1
and their respective stable series.
References
5 totalFrequently asked questions
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What is CVE-2026-63838?
CVE-2026-63838 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.6 onward and has been patched in 6.6.141, 6.12.91, 6.18.33 and others. CVE-2026-63838 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-2026-63838?
Yes — CVE-2026-63838 has been patched. Fixed versions include 6.6.141, 6.12.91, 6.18.33 and others. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-63838 actively exploited?
No — CVE-2026-63838 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.