{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/erofs/zmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "00d8fe0b72f4ca0a983abced36aad2160038c421",
              "status": "affected",
              "version": "1d191b4ca51d73699cb127386b95ac152af2b930",
              "versionType": "git"
            },
            {
              "lessThan": "a429b76114aaca3ef1aff4cd469dcf025431bd11",
              "status": "affected",
              "version": "1d191b4ca51d73699cb127386b95ac152af2b930",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/erofs/zmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.6",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix crafted invalid cases for encoded extents\n\nRobert recently reported two corrupted images that can cause system\ncrashes, which are related to the new encoded extents introduced\nin Linux 6.15:\n\n  - The first one [1] has plen != 0 (e.g. plen == 0x2000000) but\n    (plen \u0026 Z_EROFS_EXTENT_PLEN_MASK) == 0. It is used to represent\n    special extents such as sparse extents (!EROFS_MAP_MAPPED), but\n    previously only plen == 0 was handled;\n\n  - The second one [2] has pa 0xffffffffffdcffed and plen 0xb4000,\n    then \"cur [0xfffffffffffff000] += bvec.bv_len [0x1000]\" in\n    \"} while ((cur += bvec.bv_len) \u003c end);\" wraps around, causing an\n    out-of-bound access of pcl-\u003ecompressed_bvecs[] in\n    z_erofs_submit_queue().  EROFS only supports 48-bit physical block\n    addresses (up to 1EiB for 4k blocks), so add a sanity check to\n    enforce this."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-04T15:31:30.594Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/00d8fe0b72f4ca0a983abced36aad2160038c421"
        },
        {
          "url": "https://git.kernel.org/stable/c/a429b76114aaca3ef1aff4cd469dcf025431bd11"
        }
      ],
      "title": "erofs: fix crafted invalid cases for encoded extents",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40241",
    "datePublished": "2025-12-04T15:31:30.594Z",
    "dateReserved": "2025-04-16T07:20:57.181Z",
    "dateUpdated": "2025-12-04T15:31:30.594Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40241\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-04T16:16:17.250\",\"lastModified\":\"2025-12-04T17:15:08.283\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nerofs: fix crafted invalid cases for encoded extents\\n\\nRobert recently reported two corrupted images that can cause system\\ncrashes, which are related to the new encoded extents introduced\\nin Linux 6.15:\\n\\n  - The first one [1] has plen != 0 (e.g. plen == 0x2000000) but\\n    (plen \u0026 Z_EROFS_EXTENT_PLEN_MASK) == 0. It is used to represent\\n    special extents such as sparse extents (!EROFS_MAP_MAPPED), but\\n    previously only plen == 0 was handled;\\n\\n  - The second one [2] has pa 0xffffffffffdcffed and plen 0xb4000,\\n    then \\\"cur [0xfffffffffffff000] += bvec.bv_len [0x1000]\\\" in\\n    \\\"} while ((cur += bvec.bv_len) \u003c end);\\\" wraps around, causing an\\n    out-of-bound access of pcl-\u003ecompressed_bvecs[] in\\n    z_erofs_submit_queue().  EROFS only supports 48-bit physical block\\n    addresses (up to 1EiB for 4k blocks), so add a sanity check to\\n    enforce this.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/00d8fe0b72f4ca0a983abced36aad2160038c421\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a429b76114aaca3ef1aff4cd469dcf025431bd11\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}