{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/iomap/buffered-io.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4a927f670cdb0def226f9f85f42a9f19d9e09c88",
              "status": "affected",
              "version": "b2f35ac4146d32d4424aaa941bbc681f12c1b9e6",
              "versionType": "git"
            },
            {
              "lessThan": "bd71fb3fea9945987053968f028a948997cba8cc",
              "status": "affected",
              "version": "b2f35ac4146d32d4424aaa941bbc681f12c1b9e6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/iomap/buffered-io.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.11",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niomap: fix invalid folio access when i_blkbits differs from I/O granularity\n\nCommit aa35dd5cbc06 (\"iomap: fix invalid folio access after\nfolio_end_read()\") partially addressed invalid folio access for folios\nwithout an ifs attached, but it did not handle the case where\n1 \u003c\u003c inode-\u003ei_blkbits matches the folio size but is different from the\ngranularity used for the IO, which means IO can be submitted for less\nthan the full folio for the !ifs case.\n\nIn this case, the condition:\n\n  if (*bytes_submitted == folio_len)\n    ctx-\u003ecur_folio = NULL;\n\nin iomap_read_folio_iter() will not invalidate ctx-\u003ecur_folio, and\niomap_read_end() will still be called on the folio even though the IO\nhelper owns it and will finish the read on it.\n\nFix this by unconditionally invalidating ctx-\u003ecur_folio for the !ifs\ncase."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-22T13:53:54.224Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4a927f670cdb0def226f9f85f42a9f19d9e09c88"
        },
        {
          "url": "https://git.kernel.org/stable/c/bd71fb3fea9945987053968f028a948997cba8cc"
        }
      ],
      "title": "iomap: fix invalid folio access when i_blkbits differs from I/O granularity",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31463",
    "datePublished": "2026-04-22T13:53:54.224Z",
    "dateReserved": "2026-03-09T15:48:24.092Z",
    "dateUpdated": "2026-04-22T13:53:54.224Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-31463",
      "date": "2026-04-25",
      "epss": "0.00018",
      "percentile": "0.04987"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-31463\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-04-22T14:16:42.323\",\"lastModified\":\"2026-04-23T16:17:41.280\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niomap: fix invalid folio access when i_blkbits differs from I/O granularity\\n\\nCommit aa35dd5cbc06 (\\\"iomap: fix invalid folio access after\\nfolio_end_read()\\\") partially addressed invalid folio access for folios\\nwithout an ifs attached, but it did not handle the case where\\n1 \u003c\u003c inode-\u003ei_blkbits matches the folio size but is different from the\\ngranularity used for the IO, which means IO can be submitted for less\\nthan the full folio for the !ifs case.\\n\\nIn this case, the condition:\\n\\n  if (*bytes_submitted == folio_len)\\n    ctx-\u003ecur_folio = NULL;\\n\\nin iomap_read_folio_iter() will not invalidate ctx-\u003ecur_folio, and\\niomap_read_end() will still be called on the folio even though the IO\\nhelper owns it and will finish the read on it.\\n\\nFix this by unconditionally invalidating ctx-\u003ecur_folio for the !ifs\\ncase.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4a927f670cdb0def226f9f85f42a9f19d9e09c88\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bd71fb3fea9945987053968f028a948997cba8cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}