md/raid1,raid10: fix error-path detection with md_cloned_bio()
CVE-2026-74374 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-74374, released August 15, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 13.5 (trixie) | 6.12.115-2 | DEBIAN-CVE-2026-74374 | Aug 15, 2026 |
| linux · Debian 14 | 7.1.5-1 | DEBIAN-CVE-2026-74374 | Aug 15, 2026 |
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