CVE-2026-93090 firmware: arm_scmi: Clean up channels on setup failure
A failure in SCMI channel setup can leave resources registered, potentially causing memory corruption or denial of service in the Linux kernel.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-93090?
CVE-2026-93090 is a memory corruption vulnerability in Linux, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-93090?
How do I fix CVE-2026-93090?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-93090 being exploited?
There is no known exploitation of CVE-2026-93090 in the wild and no public exploit code.
Sources
Also known as AZL-102260, BELL-CVE-2026-93090, DEBIAN-CVE-2026-93090, GHSA-xw7j-rvhv-mgwx, UBUNTU-CVE-2026-93090.