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CVE-2021-47037: ASoC: q6afe-clocks: fix reprobing of the driver

• Severity: medium (CVSS 5.5 v3.1)
• 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: 2024-02-28 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: q6afe-clocks: fix reprobing of the driver Q6afe-clocks driver can get reprobed. For example if the APR services are restarted after the firmware crash. However currently Q6afe-clocks driver will oops because hw.init will get cleared during first _probe call. Rewrite the driver to fill the clock data at runtime rather than using big static array of clocks.

Affected products

• Linux kernel: from 5.10 before 5.11.21; from 5.12 before 5.12.4 — fixed in 5.11.21, 5.12.4

How to fix

Upgrade to a fixed version: Linux kernel 5.11.21, 5.12.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2202e87fc19440cecfd4f7b4f60a7d48bc2e236c
• https://git.kernel.org/stable/c/62413972f5266568848a36fd15160397b211fa74
• https://git.kernel.org/stable/c/6893df3753beafa5f7351228a9dd8157a57d7492
• https://git.kernel.org/stable/c/96fadf7e8ff49fdb74754801228942b67c3eeebd
• https://git.kernel.org/stable/c/62413972f5266568848a36fd15160397b211fa74
• https://git.kernel.org/stable/c/6893df3753beafa5f7351228a9dd8157a57d7492
• https://git.kernel.org/stable/c/96fadf7e8ff49fdb74754801228942b67c3eeebd
• https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html

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