{"id":"CVE-2025-22125","title":"md/raid1,raid10: don't ignore IO flags","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1,raid10: don't ignore IO flags\n\nIf blk-wbt is enabled by default, it's found that raid write performance\nis quite bad because all IO are throttled by wbt of und…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < 10f4ff4baeb6951cf58282954318827b6852d501","Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < 73506e581c0b1814cdfd2229d589f30751d7de26","Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < 8a0adf3d778c4a0893c6d34a9e1b0082a6f1c495","Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < e879a0d9cb086c8e52ce6c04e5bfa63825a6213c","Linux 2.6.19"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:39:03.278698Z"},"published":"2025-04-16","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:41:50.912Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-22125","references":[{"url":"https://git.kernel.org/stable/c/10f4ff4baeb6951cf58282954318827b6852d501"},{"url":"https://git.kernel.org/stable/c/73506e581c0b1814cdfd2229d589f30751d7de26"},{"url":"https://git.kernel.org/stable/c/8a0adf3d778c4a0893c6d34a9e1b0082a6f1c495"},{"url":"https://git.kernel.org/stable/c/e879a0d9cb086c8e52ce6c04e5bfa63825a6213c"}],"tags":["cve.org"],"epss":0.00189,"epssPercentile":0.08567,"ingestedAt":"2026-11-05T22:38:31.861Z","slug":"CVE-2025-22125","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1,raid10: don't ignore IO flags\n\nIf blk-wbt is enabled by default, it's found that raid write performance\nis quite bad because all IO are throttled by wbt of underlying disks,\ndue to flag REQ_IDLE is ignored. And turns out this behaviour exist since\nblk-wbt is introduced.\n\nOther than REQ_IDLE, other flags should not be ignored as well, for\nexample REQ_META can be set for filesystems, clearing it can cause priority\nreverse problems; And REQ_NOWAIT should not be cleared as well, because\nio will wait instead of failing directly in underlying disks.\n\nFix those problems by keep IO flags from master bio.\n\nFises: f51d46d0e7cb (\"md: add support for REQ_NOWAIT\")\n\n## Affected\n\n- `Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < 10f4ff4baeb6951cf58282954318827b6852d501`\n- `Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < 73506e581c0b1814cdfd2229d589f30751d7de26`\n- `Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < 8a0adf3d778c4a0893c6d34a9e1b0082a6f1c495`\n- `Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < e879a0d9cb086c8e52ce6c04e5bfa63825a6213c`\n- `Linux 2.6.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}