CVE-2025-22125None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: md/raid1,raid10: don't ignore IO flags If blk-wbt is enabled by default, it's found that raid write performance is quite bad because all IO are throttled by wbt of und…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
md/raid1,raid10: don't ignore IO flags
If blk-wbt is enabled by default, it's found that raid write performance is quite bad because all IO are throttled by wbt of underlying disks, due to flag REQ_IDLE is ignored. And turns out this behaviour exist since blk-wbt is introduced.
Other than REQ_IDLE, other flags should not be ignored as well, for example REQ_META can be set for filesystems, clearing it can cause priority reverse problems; And REQ_NOWAIT should not be cleared as well, because io will wait instead of failing directly in underlying disks.
Fix those problems by keep IO flags from master bio.
Fises: f51d46d0e7cb ("md: add support for REQ_NOWAIT")
Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < 10f4ff4baeb6951cf58282954318827b6852d501Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < 73506e581c0b1814cdfd2229d589f30751d7de26Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < 8a0adf3d778c4a0893c6d34a9e1b0082a6f1c495Linux >= 5404bc7a87b9949cf61e0174b21f80e73239ab25 < e879a0d9cb086c8e52ce6c04e5bfa63825a6213cLinux 2.6.19Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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