GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-31449 (GCVE-0-2026-31449)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:53 – Updated: 2026-08-05 12:22
VLAI
Title
ext4: validate p_idx bounds in ext4_ext_correct_indexes
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: validate p_idx bounds in ext4_ext_correct_indexes ext4_ext_correct_indexes() walks up the extent tree correcting index entries when the first extent in a leaf is modified. Before accessing path[k].p_idx->ei_block, there is no validation that p_idx falls within the valid range of index entries for that level. If the on-disk extent header contains a corrupted or crafted eh_entries value, p_idx can point past the end of the allocated buffer, causing a slab-out-of-bounds read. Fix this by validating path[k].p_idx against EXT_LAST_INDEX() at both access sites: before the while loop and inside it. Return -EFSCORRUPTED if the index pointer is out of range, consistent with how other bounds violations are handled in the ext4 extent tree code.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a86c61812637c7dd0c57e29880cffd477b62f2e7 , < 39d6e2b67651614bac0dc6592fa9836321910067 (git)
Affected: a86c61812637c7dd0c57e29880cffd477b62f2e7 , < c5839b34704c9c2f47f079451bdbb22de0da1ed1 (git)
Affected: a86c61812637c7dd0c57e29880cffd477b62f2e7 , < 10242e640b36b91ad03d25f3dc77854bbdff8358 (git)
Affected: a86c61812637c7dd0c57e29880cffd477b62f2e7 , < 4d08401aa13f1531216f1a7ae281ca4806e90a5c (git)
Affected: a86c61812637c7dd0c57e29880cffd477b62f2e7 , < 407c944f217c17d4343148011acafebc604d55e1 (git)
Affected: a86c61812637c7dd0c57e29880cffd477b62f2e7 , < 93f2e975ed658ce09db4d4c2877ca2c06540df83 (git)
Affected: a86c61812637c7dd0c57e29880cffd477b62f2e7 , < 01bf1e0b997d82c0e353b51ed74ef99698043c33 (git)
Affected: a86c61812637c7dd0c57e29880cffd477b62f2e7 , < 2acb5c12ebd860f30e4faf67e6cc8c44ddfe5fe8 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.19
Unaffected: 0 , < 2.6.19 (semver)
Unaffected: 5.10.259 , ≤ 5.10.* (semver)
Unaffected: 5.15.210 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.80 , ≤ 6.12.* (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/extents.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "39d6e2b67651614bac0dc6592fa9836321910067",
              "status": "affected",
              "version": "a86c61812637c7dd0c57e29880cffd477b62f2e7",
              "versionType": "git"
            },
            {
              "lessThan": "c5839b34704c9c2f47f079451bdbb22de0da1ed1",
              "status": "affected",
              "version": "a86c61812637c7dd0c57e29880cffd477b62f2e7",
              "versionType": "git"
            },
            {
              "lessThan": "10242e640b36b91ad03d25f3dc77854bbdff8358",
              "status": "affected",
              "version": "a86c61812637c7dd0c57e29880cffd477b62f2e7",
              "versionType": "git"
            },
            {
              "lessThan": "4d08401aa13f1531216f1a7ae281ca4806e90a5c",
              "status": "affected",
              "version": "a86c61812637c7dd0c57e29880cffd477b62f2e7",
              "versionType": "git"
            },
            {
              "lessThan": "407c944f217c17d4343148011acafebc604d55e1",
              "status": "affected",
              "version": "a86c61812637c7dd0c57e29880cffd477b62f2e7",
              "versionType": "git"
            },
            {
              "lessThan": "93f2e975ed658ce09db4d4c2877ca2c06540df83",
              "status": "affected",
              "version": "a86c61812637c7dd0c57e29880cffd477b62f2e7",
              "versionType": "git"
            },
            {
              "lessThan": "01bf1e0b997d82c0e353b51ed74ef99698043c33",
              "status": "affected",
              "version": "a86c61812637c7dd0c57e29880cffd477b62f2e7",
              "versionType": "git"
            },
            {
              "lessThan": "2acb5c12ebd860f30e4faf67e6cc8c44ddfe5fe8",
              "status": "affected",
              "version": "a86c61812637c7dd0c57e29880cffd477b62f2e7",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/extents.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": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.80",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.21",
              "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": "5.10.259",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.210",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.80",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.21",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.11",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "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\next4: validate p_idx bounds in ext4_ext_correct_indexes\n\next4_ext_correct_indexes() walks up the extent tree correcting\nindex entries when the first extent in a leaf is modified. Before\naccessing path[k].p_idx-\u003eei_block, there is no validation that\np_idx falls within the valid range of index entries for that\nlevel.\n\nIf the on-disk extent header contains a corrupted or crafted\neh_entries value, p_idx can point past the end of the allocated\nbuffer, causing a slab-out-of-bounds read.\n\nFix this by validating path[k].p_idx against EXT_LAST_INDEX() at\nboth access sites: before the while loop and inside it. Return\n-EFSCORRUPTED if the index pointer is out of range, consistent\nwith how other bounds violations are handled in the ext4 extent\ntree code."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable ext4 code is reached through local filesystem operations such as pwrite64, fallocate, or truncate on a mounted ext4 filesystem. It is not directly reachable through network packets, and physical access is not strictly required because a crafted filesystem image can be supplied as a local/block-device image.\nAC:L - Once the crafted/corrupted extent metadata is present on a mounted filesystem, the trigger is a straightforward file write or extent update with no race or condition outside the attacker\u0027s control. Syzbot reproduced it through the ordinary buffered-write path.\nPR:N - In the highest-severity defensible scenario, the attacker supplies a malicious ext4 image and relies on a victim/admin or automount workflow to mount it, so the attacker needs no privileges on the target. Ext4 is not user-namespace mountable, but that mount requirement is captured as user interaction rather than attacker privileges.\nUI:R - Exploitation requires the crafted ext4 filesystem to be mounted and then operated on, such as by writing to the crafted file. There is no pre-authentication or autonomous network-facing path into this code.\nS:U - The impact is within the kernel/filesystem security authority of the same host. This is not a guest-to-host escape or another cross-scope boundary violation.\nC:H - The bug is a slab out-of-bounds access from an attacker-controlled extent-tree pointer, which can expose adjacent kernel memory in a corrupted heap layout. Under the required overestimation rule, this memory-corruption primitive supports high confidentiality impact.\nI:H - The unchecked p_idx is used to update ei_block, so an out-of-bounds pointer can corrupt memory or filesystem metadata beyond the valid extent index entry. Such kernel memory corruption is defensibly treated as high integrity impact.\nA:H - The reported failure is a KASAN slab-out-of-bounds fault in kernel ext4 code and can cause an oops/panic or filesystem failure. Repeated triggering through file operations can deny availability of the host or mounted filesystem."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:22:39.911Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/39d6e2b67651614bac0dc6592fa9836321910067"
        },
        {
          "url": "https://git.kernel.org/stable/c/c5839b34704c9c2f47f079451bdbb22de0da1ed1"
        },
        {
          "url": "https://git.kernel.org/stable/c/10242e640b36b91ad03d25f3dc77854bbdff8358"
        },
        {
          "url": "https://git.kernel.org/stable/c/4d08401aa13f1531216f1a7ae281ca4806e90a5c"
        },
        {
          "url": "https://git.kernel.org/stable/c/407c944f217c17d4343148011acafebc604d55e1"
        },
        {
          "url": "https://git.kernel.org/stable/c/93f2e975ed658ce09db4d4c2877ca2c06540df83"
        },
        {
          "url": "https://git.kernel.org/stable/c/01bf1e0b997d82c0e353b51ed74ef99698043c33"
        },
        {
          "url": "https://git.kernel.org/stable/c/2acb5c12ebd860f30e4faf67e6cc8c44ddfe5fe8"
        }
      ],
      "title": "ext4: validate p_idx bounds in ext4_ext_correct_indexes",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31449",
    "datePublished": "2026-04-22T13:53:44.777Z",
    "dateReserved": "2026-03-09T15:48:24.091Z",
    "dateUpdated": "2026-08-05T12:22:39.911Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-31449",
      "date": "2026-09-07",
      "epss": "0.00135",
      "percentile": "0.03272"
    },
    "microsoft_vex": {
      "current_release_date": "2026-06-23T14:44:04.000Z",
      "cve": "CVE-2026-31449",
      "id": "msrc_CVE-2026-31449",
      "initial_release_date": "2026-04-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "6",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ext4: validate p_idx bounds in ext4_ext_correct_indexes",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-31449.json",
      "version": "9"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-31449\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-04-22T14:16:38.933\",\"lastModified\":\"2026-06-19T13:16:26.183\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: validate p_idx bounds in ext4_ext_correct_indexes\\n\\next4_ext_correct_indexes() walks up the extent tree correcting\\nindex entries when the first extent in a leaf is modified. Before\\naccessing path[k].p_idx-\u003eei_block, there is no validation that\\np_idx falls within the valid range of index entries for that\\nlevel.\\n\\nIf the on-disk extent header contains a corrupted or crafted\\neh_entries value, p_idx can point past the end of the allocated\\nbuffer, causing a slab-out-of-bounds read.\\n\\nFix this by validating path[k].p_idx against EXT_LAST_INDEX() at\\nboth access sites: before the while loop and inside it. Return\\n-EFSCORRUPTED if the index pointer is out of range, consistent\\nwith how other bounds violations are handled in the ext4 extent\\ntree code.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/ext4/extents.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"a86c61812637c7dd0c57e29880cffd477b62f2e7\",\"lessThan\":\"39d6e2b67651614bac0dc6592fa9836321910067\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a86c61812637c7dd0c57e29880cffd477b62f2e7\",\"lessThan\":\"c5839b34704c9c2f47f079451bdbb22de0da1ed1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a86c61812637c7dd0c57e29880cffd477b62f2e7\",\"lessThan\":\"10242e640b36b91ad03d25f3dc77854bbdff8358\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a86c61812637c7dd0c57e29880cffd477b62f2e7\",\"lessThan\":\"4d08401aa13f1531216f1a7ae281ca4806e90a5c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a86c61812637c7dd0c57e29880cffd477b62f2e7\",\"lessThan\":\"407c944f217c17d4343148011acafebc604d55e1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a86c61812637c7dd0c57e29880cffd477b62f2e7\",\"lessThan\":\"93f2e975ed658ce09db4d4c2877ca2c06540df83\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a86c61812637c7dd0c57e29880cffd477b62f2e7\",\"lessThan\":\"01bf1e0b997d82c0e353b51ed74ef99698043c33\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a86c61812637c7dd0c57e29880cffd477b62f2e7\",\"lessThan\":\"2acb5c12ebd860f30e4faf67e6cc8c44ddfe5fe8\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/ext4/extents.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.19\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.19\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.259\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.210\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.175\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.140\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.80\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.21\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.11\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.19.1\",\"versionEndExcluding\":\"6.12.80\",\"matchCriteriaId\":\"6126AEF2-0176-48D1-96AD-72781F726931\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.21\",\"matchCriteriaId\":\"ED39847A-3B46-4729-B7CA-B2C30B9FA8FE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"6.19.11\",\"matchCriteriaId\":\"4CA2E747-A9EC-4518-9AA2-B4247FC748B7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"9E2DBD4C-9DD9-4DD3-87CB-A0070A789CEA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"8D97ED16-D6B7-4445-889C-4D6DE2EDC49A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"B2C2D5D4-9A4B-4CDF-8D71-D22EB5E97D5A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"DFFB2843-A867-48EC-97D7-B106C7BBAED0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"3CD3FE23-1A10-47E6-AD7E-D67F1BE3C5E2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.19:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"9F39FC76-7D77-4064-94D3-A16C436FA8D1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"F253B622-8837-4245-BCE5-A7BF8FC76A16\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F666C8D8-6538-46D4-B318-87610DE64C34\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"02259FDA-961B-47BC-AE7F-93D7EC6E90C2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"58A9FEFF-C040-420D-8F0A-BFDAAA1DF258\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/01bf1e0b997d82c0e353b51ed74ef99698043c33\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/10242e640b36b91ad03d25f3dc77854bbdff8358\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2acb5c12ebd860f30e4faf67e6cc8c44ddfe5fe8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/39d6e2b67651614bac0dc6592fa9836321910067\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/407c944f217c17d4343148011acafebc604d55e1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4d08401aa13f1531216f1a7ae281ca4806e90a5c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/93f2e975ed658ce09db4d4c2877ca2c06540df83\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c5839b34704c9c2f47f079451bdbb22de0da1ed1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-02T17:13:45+00:00",
      "cve": "CVE-2026-31449",
      "id": "CVE-2026-31449",
      "initial_release_date": "2026-04-22T00:00:00+00:00",
      "product_status:known_affected": "260",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ext4: validate p_idx bounds in ext4_ext_correct_indexes",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31449.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.