Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/ras: reset CPER ring on corrupt entry size When CPER ring overflow handling advances the read pointer, it trusts the parsed entry size from the current ring contents. Corrupt CPER data can produce an entry size that does not advance rptr after dword conversion and pointer masking. In that case the recovery loop keeps testing the same location while holding the CPER ring mutex. This can hang the worker that is writing the next CPER record. Detect a no-progress rptr update and reset the CPER ring to an empty state instead. This drops the corrupt contents and lets the writer leave the recovery path without spinning.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4058e7cbfd0fb0cae7cbb8035bb43c593cc7c964 to < a98d0d49757a113ce17960262b9cd4ccc1420108affected4058e7cbfd0fb0cae7cbb8035bb43c593cc7c964 to < 4d695e66d7027a0c78302e47ac76293675fbbb4daffected
Linux Linux
Default version status: affected
6.15affected0 to < 6.15unaffected6.18.53 to ≤ 6.18.*unaffected7.2 to ≤ *unaffected