What’s Vulnerable › Vulnerabilities

CVE-2026-64486: ALSA: cmipci: check snd_ctl_new1() return value

• 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: 2026-07-25 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: cmipci: check snd_ctl_new1() return value snd_ctl_new1() can return NULL when memory allocation fails. snd_cmipci_spdif_controls() does not check the return value before dereferencing kctl->id.device, which can lead to a NULL pointer dereference. Add NULL checks after snd_ctl_new1() calls and return -ENOMEM if any fails.

Affected products

• Linux kernel: from 6.1.34 before 6.1.178; from 6.3.8 before 6.4; 6.4 — fixed in 6.1.178, 6.4, 7.2

How to fix

Upgrade to a fixed version: Linux kernel 6.1.178, 6.4, 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/4dd5b0b1a52a8d6e59a3f217204817228ce0238b
• https://git.kernel.org/stable/c/67e9ea92cd598cba1783ff701553c776a6cedee9
• https://git.kernel.org/stable/c/8825a06bfa7932a7a74dec01669d405df0b47286
• https://git.kernel.org/stable/c/af2b009b773bc42995546507963e5e78970dc3ed
• https://git.kernel.org/stable/c/b44888c33c4f11277d0e5e023338f2740232a4ed
• https://git.kernel.org/stable/c/c205bd1b28fb7e5f1061a4e78813fad7d315cb3e

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