CVE-2024-56764
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedJan 6, 2025
First seenJan 6, 2025
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel6.12.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.7 ≤ v < 6.12.8, 6.13 | 6.12.8 |
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