Linux kernel, btrfs filesystem vulnerabilities

A vulnerability has been identified in the Linux kernel within the btrfs filesystem, which involves a use-after-free error when attempting to join an aborted transaction. The issue arises when reading the 'aborted' field after unlocking trans_lock, potentially leading to unsafe memory access.

A vulnerability related to the corruption of the dirty_list in the block group tree in the btrfs filesystem has been fixed in the Linux kernel. The issue occurs when the EXTENT_TREE_V2 flag is set, leading to improper addition of elements to the list and potentially causing transaction errors.

A vulnerability has been identified in the Linux kernel within the Btrfs filesystem that leads to system aborts during chunk allocation due to non-consecutive gaps. This issue can occur with DUP chunk allocations, resulting in an EEXIST error.