CVE-2026-23423
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
btrfs: free pages on error in btrfs_uring_read_extent()
In this function the 'pages' object is never freed in the hopes that it is
picked up by btrfs_uring_read_finished() whenever that executes in the
future. But that's just the happy path. Along the way previous
allocations might have gone wrong, or we might not get -EIOCBQUEUED from
btrfs_encoded_read_regular_fill_pages(). In all these cases, we go to a
cleanup section that frees all memory allocated by this function without
assuming any deferred execution, and this also needs to happen for the
'pages' allocation.
https://git.kernel.org/stable/c/3f501412f2079ca14bf68a18d80a2b7a823f1f64
https://git.kernel.org/stable/c/628895890b0c9ac9129129e89455da7db95ba343
https://git.kernel.org/stable/c/d4f210de01eaccac61eee657f676045ef9771d07