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CVE-2025-40344: ASoC: Intel: avs: Disable periods-elapsed work when closing PCM

• Severity: high (CVSS 7.8 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: 2025-12-09 · updated 2026-10-15

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: Intel: avs: Disable periods-elapsed work when closing PCM avs_dai_fe_shutdown() handles the shutdown procedure for HOST HDAudio stream while period-elapsed work services its IRQs. As the former frees the DAI's private context, these two operations shall be synchronized to avoid slab-use-after-free or worse errors.

Affected products

• Linux kernel: from 6.11.9 before 6.12; 6.12 — fixed in 6.12, 6.18

How to fix

Upgrade to a fixed version: Linux kernel 6.12, 6.18. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/845f716dc5f354c719f6fda35048b6c2eca99331
• https://git.kernel.org/stable/c/b41fca4aa60be896ba8a81b57aac5dcc6eee66c0
• https://git.kernel.org/stable/c/ca6d2b7aca778afbf8c0c4b330d10cb228c14052

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