In the Linux kernel, the following vulnerability has been...
Moderate severity
Unreviewed
Published
Aug 7, 2024
to the GitHub Advisory Database
•
Updated Aug 8, 2024
Description
Published by the National Vulnerability Database
Aug 7, 2024
Published to the GitHub Advisory Database
Aug 7, 2024
Last updated
Aug 8, 2024
In the Linux kernel, the following vulnerability has been resolved:
cachefiles: add missing lock protection when polling
Add missing lock protection in poll routine when iterating xarray,
otherwise:
Even with RCU read lock held, only the slot of the radix tree is
ensured to be pinned there, while the data structure (e.g. struct
cachefiles_req) stored in the slot has no such guarantee. The poll
routine will iterate the radix tree and dereference cachefiles_req
accordingly. Thus RCU read lock is not adequate in this case and
spinlock is needed here.
References