CVE-2024-56764

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.

Reserved 2024-12-29 | Published 2025-01-06 | Updated 2025-01-20 | Assigner Linux

Product status

Default status
unaffected

bd23f6c2c2d00518e2f27f2d25cef795de9bee56 before 7d680f2f76a3417fdfc3946da7471e81464f7b41
affected

bd23f6c2c2d00518e2f27f2d25cef795de9bee56 before 75cd4005da5492129917a4a4ee45e81660556104
affected

Default status
affected

6.7
affected

Any version before 6.7
unaffected

6.12.8
unaffected

6.13
unaffected

References

git.kernel.org/...c/7d680f2f76a3417fdfc3946da7471e81464f7b41

git.kernel.org/...c/75cd4005da5492129917a4a4ee45e81660556104

cve.org (CVE-2024-56764)

nvd.nist.gov (CVE-2024-56764)

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