CVE-2026-89584
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:
block: validate user space vectors during extraction
The bio-based drivers don't necessarily check the alignment split, and stacking block drivers don't always handle a misalignment detected after submitting the bio. Validate user vectors against the device's dma_alignment as the bio is built from the iov_iter, rejecting misaligned early with -EINVAL.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 5ff3f74e145adc79b49668adb8de276446acf6be < d44a97a3b1c00cc571245124e23e5ceb0a0225a0 | affected |
| Linux | Linux | 5ff3f74e145adc79b49668adb8de276446acf6be < 14b007e178811db72fbb1ebb3535160db6ec1e6a | affected |
| Linux | Linux | 6.18 | affected |
| Linux | Linux | 0 < 6.18 | unaffected |
| Linux | Linux | 7.2.4 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/d44a97a3b1c00cc571245124e23e5ceb0a0225a0
- https://git.kernel.org/stable/c/14b007e178811db72fbb1ebb3535160db6ec1e6a
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