CVE-2024-56764
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | bd23f6c2c2d00518e2f27f2d25cef795de9bee56 < 7d680f2f76a3417fdfc3946da7471e81464f7b41 | affected |
| Linux | Linux | bd23f6c2c2d00518e2f27f2d25cef795de9bee56 < 75cd4005da5492129917a4a4ee45e81660556104 | affected |
| Linux | Linux | 6.7 | affected |
| Linux | Linux | 0 < 6.7 | unaffected |
| Linux | Linux | 6.12.8 <= 6.12.* | unaffected |
| Linux | Linux | 6.13 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://git.kernel.org/stable/c/7d680f2f76a3417fdfc3946da7471e81464f7b41
- https://git.kernel.org/stable/c/75cd4005da5492129917a4a4ee45e81660556104
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