CVE-2025-22125 (GCVE-0-2025-22125)
Vulnerability from cvelistv5
Published
2025-04-16 14:13
Modified
2025-09-09 17:05
Severity ?
Summary
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")
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/73506e581c0b1814cdfd2229d589f30751d7de26
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8a0adf3d778c4a0893c6d34a9e1b0082a6f1c495
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e879a0d9cb086c8e52ce6c04e5bfa63825a6213c
Impacted products
Vendor Product Version
Linux Linux Version: 5404bc7a87b9949cf61e0174b21f80e73239ab25
Version: 5404bc7a87b9949cf61e0174b21f80e73239ab25
Version: 5404bc7a87b9949cf61e0174b21f80e73239ab25
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   Linux Linux Version: 2.6.19
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid1.c",
            "drivers/md/raid10.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
            {
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            }
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          "programFiles": [
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            "drivers/md/raid10.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.19"
            },
            {
              "lessThan": "2.6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.46",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.2",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1,raid10: don\u0027t ignore IO flags\n\nIf blk-wbt is enabled by default, it\u0027s 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\")"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-09T17:05:53.880Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/73506e581c0b1814cdfd2229d589f30751d7de26"
        },
        {
          "url": "https://git.kernel.org/stable/c/8a0adf3d778c4a0893c6d34a9e1b0082a6f1c495"
        },
        {
          "url": "https://git.kernel.org/stable/c/e879a0d9cb086c8e52ce6c04e5bfa63825a6213c"
        }
      ],
      "title": "md/raid1,raid10: don\u0027t ignore IO flags",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-22125",
    "datePublished": "2025-04-16T14:13:08.779Z",
    "dateReserved": "2024-12-29T08:45:45.823Z",
    "dateUpdated": "2025-09-09T17:05:53.880Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-22125\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-04-16T15:16:06.630\",\"lastModified\":\"2025-09-09T17:15:42.503\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmd/raid1,raid10: don\u0027t ignore IO flags\\n\\nIf blk-wbt is enabled by default, it\u0027s 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\\\")\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: md/raid1,raid10: no ignorar los indicadores de E/S. Si blk-wbt est\u00e1 habilitado por defecto, el rendimiento de escritura en RAID es bastante bajo, ya que todas las E/S son limitadas por wbt de los discos subyacentes, debido a que se ignora el indicador REQ_IDLE. Resulta que este comportamiento existe desde la introducci\u00f3n de blk-wbt. Adem\u00e1s de REQ_IDLE, tampoco se deben ignorar otros indicadores; por ejemplo, se puede configurar REQ_META para sistemas de archivos; borrarlo puede causar problemas de inversi\u00f3n de prioridad. REQ_NOWAIT tampoco se debe borrar, ya que la E/S esperar\u00e1 en lugar de fallar directamente en los discos subyacentes. Para solucionar estos problemas, mantenga los indicadores de E/S de la bios maestra. Fises: f51d46d0e7cb (\\\"md: a\u00f1adir soporte para REQ_NOWAIT\\\")\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/73506e581c0b1814cdfd2229d589f30751d7de26\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8a0adf3d778c4a0893c6d34a9e1b0082a6f1c495\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e879a0d9cb086c8e52ce6c04e5bfa63825a6213c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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