UBUNTU-CVE-2025-21631

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix wakerbfqq UAF after bfqsplitbfqq Our syzkaller report a following UAF for v6.6: BUG: KASAN: slab-use-after-free in bfqinitrq+0x175d/0x17a0 block/bfq-iosched.c:6958 Read of size 8 at addr ffff8881b57147d8 by task...

PT-2025-4312

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.6.74 Description A use-after-free vulnerability has been resolved in the Linux kernel. The issue is related to the bfq init rq function in the block/bfq-iosched.c file, where a slab-use-after-free error occurs...