CVE-2024-26601 ext4: regenerate buddy after block freeing failed if under fc replay

In the Linux kernel, the following vulnerability has been resolved: ext4: regenerate buddy after block freeing failed if under fc replay This mostly reverts commit 6bd97bf273bd "ext4: remove redundant mbregeneratebuddy" and reintroduces mbregeneratebuddy. Based on code in mbfreeblocks, fast commi...

CVE-2024-26601 ext4: regenerate buddy after block freeing failed if under fc replay

In the Linux kernel, the following vulnerability has been resolved: ext4: regenerate buddy after block freeing failed if under fc replay This mostly reverts commit 6bd97bf273bd "ext4: remove redundant mbregeneratebuddy" and reintroduces mbregeneratebuddy. Based on code in mbfreeblocks, fast commi...

kernel: jbd2: add miss release buffer head in fc_do_one_pass()

A reference count leak was found in the Linux kernel's JBD2 journaling subsystem. The fcdoonepass function, used during fast commit replay, fails to release a buffer head after use. This results in a reference count leak that can prevent proper buffer memory cleanup over time...