CVE-2024-42266

A flaw was found in the btrfs module in the Linux kernel. Improper locking can occur due to an improper handling of error conditions, causing a kernel panic and resulting in a denial of service...

CVE-2024-42266 btrfs: make cow_file_range_inline() honor locked_page on error

In the Linux kernel, the following vulnerability has been resolved: btrfs: make cowfilerangeinline honor lockedpage on error The btrfs buffered write path runs through extentwritepage which has some tricky return value handling for writepagedelalloc. Specifically, when that returns 1, we exit, bu...

CVE-2024-42266

CVE-2024-42266 affects the Linux kernel’s btrfs module, specifically the cow_file_range_inline path. The issue stems from improper handling of return values in __extent_writepage()/extent_writepage paths, where a folio could be unlocked on error, triggering a kernel panic (folio_test_locked) duri...