Linux Kernel: rdev error deref in rocket accel device init
CVE-2026-99210 Published on October 28, 2026
accel/rocket: clear rdev on device init failure
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.
Products Associated with CVE-2026-99210
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Affected Versions
Linux:- Version ed98261b41687323ffa02ca20fef1e60b38fd1aa and below 79071b67182e1b352d51a3917729b8d424710b49 is affected.
- Version ed98261b41687323ffa02ca20fef1e60b38fd1aa and below dd47a6c920083b069f00f0920e4566915a6aec46 is affected.
- Version ed98261b41687323ffa02ca20fef1e60b38fd1aa and below 4ac852419f0d317c7bd8db5b8acb3cc78be7fe33 is affected.
- Version 6.18 is affected.
- Before 6.18 is unaffected.
- Version 6.18.59, <= 6.18.* is unaffected.
- Version 7.2.13, <= 7.2.* is unaffected.
- Version 7.3, <= * is unaffected.