CVE-2026-99210 accel/rocket: clear rdev on device init failure
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-99210?
CVE-2026-99210 is a vulnerability in Linux, published on 28 Oct 2026.
Official description
In the Linux kernel, the following vulnerability has been resolved:
accel/rocket: clear rdev on device init failure
rocket_probe() stores the return value from rocket_device_init() in the file-scoped rdev pointer before checking whether it is an error pointer. If rocket_device_init() fails, rdev is left as an ERR_PTR.
The rdev pointer is also used as the marker for whether the shared rocket device has already been initialized. A later core probe can therefore see a non-NULL rdev, skip rocket_device_init(), and dereference the error pointer when reading rdev->num_cores.
Save the error code and clear rdev before returning from the rocket_device_init() failure path.
Which versions are affected by CVE-2026-99210?
How do I fix CVE-2026-99210?
Upgrade to a fixed version.
Is CVE-2026-99210 being exploited?
There is no known exploitation of CVE-2026-99210 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-99210, DEBIAN-CVE-2026-99210, GHSA-7q2q-xjhr-934r, UBUNTU-CVE-2026-99210.