GHSA-PXHQ-V7W3-J8WF
Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31In 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": [],
"aliases": [
"CVE-2026-90060"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-17T17:16:54Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: control: Don\u0027t add invalid kcontrols to LED layer\n\nThe kcontrol LED state layer tries to track the all associated\nkcontrol elements with naive assumptions that they are readable.\nBut one can create a write-only element that has no get callback (even\na user element can do it), and this may lead to a NULL dereference at\nthe call chain of snd_ctl_led_notify(), as found by syzkaller.\n\nFor avoiding the Oops, add a sanity check of the kcontrol\u0027s info and\nget callbacks, and just skip the invalid kcontrols before assigning\nthe kctl to the LED layer.",
"id": "GHSA-pxhq-v7w3-j8wf",
"modified": "2026-09-17T18:31:49Z",
"published": "2026-09-17T18:31:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90060"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/18c08f84ca483029f04e426ec7ca3b5d3684cf22"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2f0c97b1a32fba8e81a69f6231aa0b3c9b6bc581"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3d20cd049fc5f51f80e24a2db7a3cf00593c79e4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6e152cbfac3a2a62f79df7d23d621917c20367eb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/74e3b979ce8b78a690f8b94ccf2e2c965f7f5c11"
}
],
"schema_version": "1.4.0",
"severity": []
}
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