CVE-2026-46164

CVE-2026-46164 affects the Linux kernel's btrfs subsystem. The vulnerability is a double-free in create_space_info_sub_group() when kobject_init_and_add() fails, causing the sub_group to be freed twice as the error path unwinds. The call chain is: create_space_info_sub_group() → btrfs_sysfs_add_s...

CVE-2026-46129

CVE-2026-46129 concerns the Linux kernel’s btrfs subsystem. In the create_space_info() error path, if kobject_init_and_add() fails, the chain leads to a double free of space_info due to both a direct kfree and a later release via space_info->kobj. The fix changes cleanup so that after kobject_...

CVE-2026-31434

CVE-2026-31434 affects the Linux kernel's btrfs subsystem. The root cause is a leak of kobject names for sub-group space_info entries: during removal, kobject_init_and_add is paired with allocations, but the corresponding btrfs_sysfs_remove_space_info() is not called on freed elements, causing le...