Description
In the Linux kernel, the following vulnerability has been resolved: ublk: detach gendisk from ublk device if add_disk() fails Inside ublk_abort_requests(), gendisk is grabbed for aborting all inflight requests. And ublk_abort_requests() is called when exiting the uring context or handling timeout. If add_disk() fails, the gendisk may have been freed when calling ublk_abort_requests(), so use-after-free can be caused when getting disk's reference in ublk_abort_requests(). Fixes the bug by detaching gendisk from ublk device if add_disk() fails.
Product status
bd23f6c2c2d00518e2f27f2d25cef795de9bee56 (git) before 7d680f2f76a3417fdfc3946da7471e81464f7b41
bd23f6c2c2d00518e2f27f2d25cef795de9bee56 (git) before 75cd4005da5492129917a4a4ee45e81660556104
6.7
Any version before 6.7
6.12.8 (semver)
6.13 (original_commit_for_fix)
References
git.kernel.org/...c/7d680f2f76a3417fdfc3946da7471e81464f7b41
git.kernel.org/...c/75cd4005da5492129917a4a4ee45e81660556104