Panthor GPU Flush Cache Hang Fix (CVE-2025-71314)
CVE-2025-71314 Published on June 3, 2026
drm/panthor: Recover from panthor_gpu_flush_caches() failures
In the Linux kernel, the following vulnerability has been resolved:
drm/panthor: Recover from panthor_gpu_flush_caches() failures
We have seen a few cases where the whole memory subsystem is blocked
and flush operations never complete. When that happens, we want to:
- schedule a reset, so we can recover from this situation
- in the reset path, we need to reset the pending_reqs so we can send
new commands after the reset
- if more panthor_gpu_flush_caches() operations are queued after
the timeout, we skip them and return -EIO directly to avoid needless
waits (the memory block won't miraculously work again)
Note that we drop the WARN_ON()s because these hangs can be triggered
with buggy GPU jobs created by the UMD, and there's no way we can
prevent it. We do keep the error messages though.
v2:
- New patch
v3:
- Collect R-b
- Explicitly mention the fact we dropped the WARN_ON()s in the commit
message
v4:
- No changes
Products Associated with CVE-2025-71314
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Affected Versions
Linux:- Version 5cd894e258c4b0b92b9b475309cea244e590d194 and below 8ec4f1b14a6147db07d6e51aa1d6bcc799649847 is affected.
- Version 5cd894e258c4b0b92b9b475309cea244e590d194 and below 57753f2c64c033a21a7400b3a2192db1cd6c890e is affected.
- Version 5cd894e258c4b0b92b9b475309cea244e590d194 and below 2c899c6026fc9d39286735b30c4d8550d4ea075b is affected.
- Version 5cd894e258c4b0b92b9b475309cea244e590d194 and below 3c0a60195b37af83bbbaf223cd3a78945bace49e is affected.
- Version 6.10 is affected.
- Before 6.10 is unaffected.
- Version 6.12.75, <= 6.12.* is unaffected.
- Version 6.18.14, <= 6.18.* is unaffected.
- Version 6.19.4, <= 6.19.* is unaffected.
- Version 7.0, <= * is unaffected.