CVE-2026-80645
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
rapidio/tsi721: prevent a bad dereference in tsi721_db_dpc()
With a list_for_each() loop, if we don't find the item we are looking for
in the list, then the loop exits with the iterator, which is 'dbell' in
this loop, pointing to invalid memory.
This code uses the 'found' variable to determine if we have found the
doorbell we are looking for or not. However, the problem that the 'found'
variable needs to be set to false at the start of each iteration,
otherwise after the first correct doorbell, then everything is marked as
found.
Reset the 'found' to false at the start of the iteration and move the
variable inside the loop.
https://git.kernel.org/stable/c/070f356ea4f419e4e85e4089381f4477f41d969e
https://git.kernel.org/stable/c/13092966ba5d8fb214a4efeddc87f9ed0fd2f945
https://git.kernel.org/stable/c/3b5c66e922aa6a3331915a14520848a5b3beccc7
https://git.kernel.org/stable/c/81c06ef66c3ab6eeaa72eb790c90ae043cdb3d43
https://git.kernel.org/stable/c/9e775c3199903d7c09a52530042b1198eab705bd
https://git.kernel.org/stable/c/acd54f42abbbd806464468838dbc04efd203d2be
https://git.kernel.org/stable/c/dc28a14f3e4546b2b06098d24177942540581a5f
https://git.kernel.org/stable/c/fc15e3a30ddd950f009c76765331783b9af94a87