← CVE Intelligence

CVE-2026-90060

ALSA: control: Don't add invalid kcontrols to LED layer PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: ALSA: control: Don't add invalid kcontrols to LED layer The kcontrol LED state layer tries to track the all associated kcontrol elements with naive assumptions that they are readable. But one can create a write-only element that has no get callback (even a user element can do it), and this may lead to a NULL dereference at the call chain of snd_ctl_led_notify(), as found by syzkaller. For avoiding the Oops, add a sanity check of the kcontrol's info and get callbacks, and just skip the invalid kcontrols before assigning the kctl to the LED layer.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 22d8de62f11b287b279f1d4473a78c7d5e53e7bc before 6e152cbfac3a2a62f79df7d23d621917c20367eb; affected 22d8de62f11b287b279f1d4473a78c7d5e53e7bc before 3b8a540b36aa064822c701e4e0a1dea2cd4ec5b0; affected 22d8de62f11b287b279f1d4473a78c7d5e53e7bc before 3d20cd049fc5f51f80e24a2db7a3cf00593c79e4; affected 22d8de62f11b287b279f1d4473a78c7d5e53e7bc before 2f0c97b1a32fba8e81a69f6231aa0b3c9b6bc581; affected 22d8de62f11b287b279f1d4473a78c7d5e53e7bc before 18c08f84ca483029f04e426ec7ca3b5d3684cf22; affected 22d8de62f11b287b279f1d4473a78c7d5e53e7bc before 74e3b979ce8b78a690f8b94ccf2e2c965f7f5c11
Linux / Linuxaffected 5.13; unaffected 0 before 5.13; unaffected 6.1.188 through 6.1.*; unaffected 6.6.160 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through *

CWE

No CWE identifiers supplied.

References