Bug 2451194 (CVE-2026-23305)

Summary: CVE-2026-23305 kernel: accel/rocket: fix unwinding in error path in rocket_probe
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the `accel/rocket` component of the Linux kernel. This vulnerability arises from improper error handling during the unwinding process in the `rocket_probe` function. When the `rocket_core_init()` function fails, the system does not correctly manage resources, leading to out-of-bounds accesses. This can result in system instability or a denial of service.
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Description OSIDB Bzimport 2026-03-25 11:03:57 UTC 
In the Linux kernel, the following vulnerability has been resolved:

accel/rocket: fix unwinding in error path in rocket_probe

When rocket_core_init() fails (as could be the case with EPROBE_DEFER),
we need to properly unwind by decrementing the counter we just
incremented and if this is the first core we failed to probe, remove the
rocket DRM device with rocket_device_fini() as well. This matches the
logic in rocket_remove(). Failing to properly unwind results in
out-of-bounds accesses.
Comment 1 Alexander B 2026-03-25 16:55:51 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026032527-CVE-2026-23305-5fa4@gregkh/T