CVE-2026-74374
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
md/raid1,raid10: fix error-path detection with md_cloned_bio()
Detect the error path using md_cloned_bio() instead of relying on r1_bio in raid1 or r10_bio->read_slot in raid10, which may be NULL or -1 after splitting and resubmitting a failed bio.
As a result, the error path may not be recognized and memory allocations can incorrectly use GFP_NOIO instead of (GFP_NOIO | __GFP_HIGH), which can lead to a deadlock under memory pressure.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 689389a06ce79fdced85b5115717f71c71e623e0 < 20fb582c92fd64e5c8bd83c6176264b2794603b7 | affected |
| Linux | Linux | 689389a06ce79fdced85b5115717f71c71e623e0 < 811545e0926d02a6a0b1a1258bb5544777c164d4 | affected |
| Linux | Linux | 4.12 | affected |
| Linux | Linux | 0 < 4.12 | unaffected |
| Linux | Linux | 7.1.5 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/20fb582c92fd64e5c8bd83c6176264b2794603b7
- https://git.kernel.org/stable/c/811545e0926d02a6a0b1a1258bb5544777c164d4
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