FKIE_CVE-2026-31514

Vulnerability from fkie_nvd - Published: 2026-04-22 14:16 - Updated: 2026-06-17 10:33
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: erofs: set fileio bio failed in short read case For file-backed mount, IO requests are handled by vfs_iocb_iter_read(). However, it can be interrupted by SIGKILL, returning the number of bytes actually copied. Unused folios in bio are unexpectedly marked as uptodate. vfs_read filemap_read filemap_get_pages filemap_readahead erofs_fileio_readahead erofs_fileio_rq_submit vfs_iocb_iter_read filemap_read filemap_get_pages <= detect signal erofs_fileio_ki_complete <= set all folios uptodate This patch addresses this by setting short read bio with an error directly.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5a5f23ef5431639db1ac3a0b274aef3a84cc413cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5cf3972c8221abdb1b464a14ccf8103d840b9085Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d1ba7d6b3cd1757b108d7b6856c92ae661d6c323Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eade54040384f54b7fb330e4b0975c5734850b3cPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/erofs/fileio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d1ba7d6b3cd1757b108d7b6856c92ae661d6c323",
              "status": "affected",
              "version": "8d582d65d20bb4796db01b19e86909ad68cb337b",
              "versionType": "git"
            },
            {
              "lessThan": "5cf3972c8221abdb1b464a14ccf8103d840b9085",
              "status": "affected",
              "version": "e49abde0ffc382a967b24f326d1614ac3bb06a94",
              "versionType": "git"
            },
            {
              "lessThan": "5a5f23ef5431639db1ac3a0b274aef3a84cc413c",
              "status": "affected",
              "version": "fe4039034dcdf584afbf763787909e28e92a4927",
              "versionType": "git"
            },
            {
              "lessThan": "eade54040384f54b7fb330e4b0975c5734850b3c",
              "status": "affected",
              "version": "bc804a8d7e865ef47fb7edcaf5e77d18bf444ebc",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/erofs/fileio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6.12.80",
              "status": "affected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.21",
              "status": "affected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThan": "6.19.11",
              "status": "affected",
              "version": "6.19.4",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E823EB64-1F92-40BB-891C-D94D00EDA086",
              "versionEndExcluding": "6.12.80",
              "versionStartIncluding": "6.12.75",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DEA57E4E-36B0-40D5-98B9-6A50348C9E74",
              "versionEndExcluding": "6.18.21",
              "versionStartIncluding": "6.18.14",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A67B0458-DAE3-4940-BBB2-1A4D263AF27B",
              "versionEndExcluding": "6.19.11",
              "versionStartIncluding": "6.19.4",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: set fileio bio failed in short read case\n\nFor file-backed mount, IO requests are handled by vfs_iocb_iter_read().\nHowever, it can be interrupted by SIGKILL, returning the number of\nbytes actually copied. Unused folios in bio are unexpectedly marked\nas uptodate.\n\n  vfs_read\n    filemap_read\n      filemap_get_pages\n        filemap_readahead\n          erofs_fileio_readahead\n            erofs_fileio_rq_submit\n              vfs_iocb_iter_read\n                filemap_read\n                  filemap_get_pages  \u003c= detect signal\n              erofs_fileio_ki_complete  \u003c= set all folios uptodate\n\nThis patch addresses this by setting short read bio with an error\ndirectly."
    }
  ],
  "id": "CVE-2026-31514",
  "lastModified": "2026-06-17T10:33:53.543",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-04-22T14:16:50.810",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5a5f23ef5431639db1ac3a0b274aef3a84cc413c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5cf3972c8221abdb1b464a14ccf8103d840b9085"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d1ba7d6b3cd1757b108d7b6856c92ae661d6c323"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/eade54040384f54b7fb330e4b0975c5734850b3c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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