kernel: block, bfq: fix waker_bfqq UAF after bfq_split_bfqq()

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...

AZL-50829 CVE-2024-49854 affecting package kernel for versions less than 5.15.173.1-1

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix uaf for accessing wakerbfqq after splitting After commit 42c306ed7233 "block, bfq: don't break merge chain in bfqsplitbfqq", if the current procress is the last holder of bfqq, the bfqq can be freed after...

DEBIAN-CVE-2024-49854

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix uaf for accessing wakerbfqq after splitting After commit 42c306ed7233 "block, bfq: don't break merge chain in bfqsplitbfqq", if the current procress is the last holder of bfqq, the bfqq can be freed after...

UBUNTU-CVE-2024-49854

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix uaf for accessing wakerbfqq after splitting After commit 42c306ed7233 "block, bfq: don't break merge chain in bfqsplitbfqq", if the current procress is the last holder of bfqq, the bfqq can be freed after...