What’s Vulnerable › Vulnerabilities

CVE-2026-64482: ALSA: gus: 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: gus: check snd_ctl_new1() return value snd_ctl_new1() can return NULL when memory allocation fails. snd_gf1_pcm_volume_control() does not check the return value before dereferencing kctl->id.index, which can lead to a NULL pointer dereference. Add a NULL check after snd_ctl_new1() and return -ENOMEM if it 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/465075c6835103821d725c13f8c545898e5f2636
• https://git.kernel.org/stable/c/5e74e5e8cb7cc25f7a89f59abaf3489bf0c6f4a0
• https://git.kernel.org/stable/c/97f6bdf5d5ded2e37f358cacb5a95f1393356604
• https://git.kernel.org/stable/c/c7fa99d30c7a166a5e5db5a585ce7501ff68326b
• https://git.kernel.org/stable/c/eccf8e91266e39f6f15637702a04a1d344833fe2
• https://git.kernel.org/stable/c/fc5d4f27ca1293bc1379ef8fff691c30d9803ca2

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