What’s Vulnerable › Vulnerabilities

CVE-2026-63838: ASoC: rsnd: Fix potential out-of-bounds access of component_dais[]

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-19 · updated 2026-07-27

Description

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 products

• Linux kernel: 6.6 — fixed in 7.1

How to fix

Upgrade to a fixed version: Linux kernel 7.1. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5
• https://git.kernel.org/stable/c/15e7b2ac2455995a6af02b9d3da7a432837aaf72
• https://git.kernel.org/stable/c/9f1daac27ca28e98c8c0e4450de42bb68d547250
• https://git.kernel.org/stable/c/a62b3e6e42359a79158c134e3cf5c74fe160c3f5
• https://git.kernel.org/stable/c/f9e437cddf6cf9e603bdaefe148c1f4792aaf39c

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