CVE-2025-38454: ALSA: ad1816a: Fix potential NULL pointer deref in snd_card_ad1816a_pnp()

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: 2025-07-25 · updated 2026-06-17
Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: ad1816a: Fix potential NULL pointer deref in snd_card_ad1816a_pnp() Use pr_warn() instead of dev_warn() when 'pdev' is NULL to avoid a potential NULL pointer dereference.

Affected products

Linux kernel: from 6.12 before 6.12.39; from 6.13 before 6.15.7; 6.16-rc1, 6.16-rc2, 6.16-rc3, 6.16-rc4, 6.16-rc5 — fixed in 6.12.39, 6.15.7

How to fix

Upgrade to a fixed version: Linux kernel 6.12.39, 6.15.7. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/043faef334a1f3d96ae88e1b7618bfa2b4946388
https://git.kernel.org/stable/c/e14bffc90866596ba19ffe549f199d7870da4241
https://git.kernel.org/stable/c/ef84c94d11ff972ecc3507f1ed092046bf6204b2

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