s2
--:--:--UTC

Searching APEX

Starting…

  1. ○ Searching Threats, IOCs & Threat Intelligence locally
  2. ○ Querying external providers
  3. ○ Asking AI Forensic Validator
  4. ○ Creating new entry from validated hit

0s elapsed

CVE-2026-45899

📛 CVE Title

ext4: drop extent cache when splitting extent fails

⬇ Download JSON ⚠ View as Threat

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: drop extent cache when splitting extent fails When the split extent fails, we might leave some extents still being processed and return an error directly, which will result in stale extent entries remaining in the extent status tree. So drop all of the remaining potentially stale extents if the splitting fails.

Overview

State
PUBLISHED
Assigner (CNA)
Linux
CVSS severity
high
CVSS score
CVSS 8.4 / 10 8.4 8.4 / 10
CVSS vector
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Effective score
8.4 / 10 HIGH source: CNA overview
MSRC score
9.8 / 10 CRITICAL MS rating: Critical
CWE(s)
—
Reserved
2026-05-13
Published
2026-05-27 12:17 UTC
Last updated
2026-05-30 10:41 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/45xxx/CVE-2026-45899.json
Linked Threat
CVE-2026-45899 — CVE-2026-45899

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published
2026-05-27 14:17:04 UTC
NVD last modified
2026-06-25 21:09:27 UTC
NVD CVSS v3.1
CVSS 5.5 / 10 5.5 5.5 / 10 MEDIUM source: nvd@nist.gov
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitability subscore
1.8 / 10
Impact subscore
3.6 / 10
EPSS score
0.0016 (probability of exploitation in next 30 days)
EPSS percentile
5.54% vs all CVEs — higher = more likely to be exploited, as of 2026-07-04

NVD / KEV / EPSS data refreshed 2026-07-05 07:35 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2026-32365
Assigner
Linux
Published
May 27, 2026, 12:17:08 PM
Updated
May 30, 2026, 10:41:44 AM
EUVD base score
0.0 / 10
EUVD-reported EPSS
0.1600
Vendors
Linux
Products
Linux (0 <5.10.253)
Linux (107a7bd31ac003e42c0f966aa8e5b26947de6024 <31bf37cf53ede8145e2bc62da803d4506da92975)
Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dc7c9b9d03a59a7fe483574531327e650a4b4adc)
Linux (107a7bd31ac003e42c0f966aa8e5b26947de6024 <120c6bd7ca9d3e80a968b758cbb3fbd67570f132)
Linux (patch: 6.6.130)
Linux (107a7bd31ac003e42c0f966aa8e5b26947de6024 <6e54f8dfee359bbd58086c883ea8cffd5312999d)
Linux (107a7bd31ac003e42c0f966aa8e5b26947de6024 <dc7c9b9d03a59a7fe483574531327e650a4b4adc)
Linux (0 <5.15.203)
Linux (patch: 6.12.75)
Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <79b592e8f1b435796cbc2722190368e3e8ffd7a1)
Linux (107a7bd31ac003e42c0f966aa8e5b26947de6024 <808f3191498f300174523c54cab101e18795ae4e)
Linux (0 <6.12.75)
Linux (patch: 5.15.203)
Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <120c6bd7ca9d3e80a968b758cbb3fbd67570f132)
Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <808f3191498f300174523c54cab101e18795ae4e)
Linux (patch: 6.18.14)
Linux (0 <6.18.14)
Linux (107a7bd31ac003e42c0f966aa8e5b26947de6024 <337506dc652383c80839edb8d8dcdd8ff2129b4f)
Linux (patch: 5.10.253)
Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6e54f8dfee359bbd58086c883ea8cffd5312999d)
Linux (3.12)
Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <31bf37cf53ede8145e2bc62da803d4506da92975)
Linux (patch: 7.0)
Linux (0 <6.6.130)
Linux (0 <6.19.4)
Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <337506dc652383c80839edb8d8dcdd8ff2129b4f)
Linux (107a7bd31ac003e42c0f966aa8e5b26947de6024 <79b592e8f1b435796cbc2722190368e3e8ffd7a1)
Linux (patch: 0)
Linux (patch: 6.19.4)
Aliases
GHSA-fm97-7qpp-598c

ENISA description: In the Linux kernel, the following vulnerability has been resolved: ext4: drop extent cache when splitting extent fails When the split extent fails, we might leave some extents still being processed and return an error directly, which will result in stale extent entries remaining in the extent status tree. So drop all of the remaining potentially stale extents if the splitting fails.

EUVD references (7)

Microsoft Security Response Center MSRC

Microsoft's vendor-authoritative record from the Security Update Guide — its own CVSS score, impact, severity rating, exploit assessment, and KB-article fixes. Refreshed 2026-08-12 01:09 UTC (source: CVRF).

MS severity
Critical
MS CVSS base score
9.8 / 10 (temporal 9.8)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Release
2026-May

Affected products (2)
VendorProductVersionsPlatforms
Linux Linux 107a7bd31ac003e42c0f966aa8e5b26947de6024 (affected), 107a7bd31ac003e42c0f966aa8e5b26947de6024 (affected), 107a7bd31ac003e42c0f966aa8e5b26947de6024 (affected), 107a7bd31ac003e42c0f966aa8e5b26947de6024 (affected), 107a7bd31ac003e42c0f966aa8e5b26947de6024 (affected), 107a7bd31ac003e42c0f966aa8e5b26947de6024 (affected), 107a7bd31ac003e42c0f966aa8e5b26947de6024 (affected) —
Linux Linux 3.12 (affected), 0 (unaffected), 5.10.253 (unaffected), 5.15.203 (unaffected), 6.6.130 (unaffected), 6.12.75 (unaffected), 6.18.14 (unaffected), 6.19.4 (unaffected), 7.0 (unaffected) —

Affected products — CPE 2.3 (1) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor references (7)

References embedded in the original CVE record by the assigning CNA.

Web references (11)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

NVD-tagged references (7)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

Remediations (19)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

AI Forensic Analysis

Only Available for Registered Users. Sign in to view.

Raw JSON

The full cvelistV5 record. Download as CVE-2026-45899.json.

{
  "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": "6e54f8dfee359bbd58086c883ea8cffd5312999d",
              "status": "affected",
              "version": "107a7bd31ac003e42c0f966aa8e5b26947de6024",
              "versionType": "git"
            },
            {
              "lessThan": "337506dc652383c80839edb8d8dcdd8ff2129b4f",
              "status": "affected",
              "version": "107a7bd31ac003e42c0f966aa8e5b26947de6024",
              "versionType": "git"
            },
            {
              "lessThan": "dc7c9b9d03a59a7fe483574531327e650a4b4adc",
              "status": "affected",
              "version": "107a7bd31ac003e42c0f966aa8e5b26947de6024",
              "versionType": "git"
            },
            {
              "lessThan": "120c6bd7ca9d3e80a968b758cbb3fbd67570f132",
              "status": "affected",
              "version": "107a7bd31ac003e42c0f966aa8e5b26947de6024",
              "versionType": "git"
            },
            {
              "lessThan": "808f3191498f300174523c54cab101e18795ae4e",
              "status": "affected",
              "version": "107a7bd31ac003e42c0f966aa8e5b26947de6024",
              "versionType": "git"
            },
            {
              "lessThan": "31bf37cf53ede8145e2bc62da803d4506da92975",
              "status": "affected",
              "version": "107a7bd31ac003e42c0f966aa8e5b26947de6024",
              "versionType": "git"
            },
            {
              "lessThan": "79b592e8f1b435796cbc2722190368e3e8ffd7a1",
              "status": "affected",
              "version": "107a7bd31ac003e42c0f966aa8e5b26947de6024",
              "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": "3.12"
            },
            {
              "lessThan": "3.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.203",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "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": "5.10.253",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.203",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.130",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.14",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: drop extent cache when splitting extent fails\n\nWhen the split extent fails, we might leave some extents still being\nprocessed and return an error directly, which will result in stale\nextent entries remaining in the extent status tree. So drop all of the\nremaining potentially stale extents if the splitting fails."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-30T10:41:44.680Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6e54f8dfee359bbd58086c883ea8cffd5312999d"
        },
        {
          "url": "https://git.kernel.org/stable/c/337506dc652383c80839edb8d8dcdd8ff2129b4f"
        },
        {
          "url": "https://git.kernel.org/stable/c/dc7c9b9d03a59a7fe483574531327e650a4b4adc"
        },
        {
          "url": "https://git.kernel.org/stable/c/120c6bd7ca9d3e80a968b758cbb3fbd67570f132"
        },
        {
          "url": "https://git.kernel.org/stable/c/808f3191498f300174523c54cab101e18795ae4e"
        },
        {
          "url": "https://git.kernel.org/stable/c/31bf37cf53ede8145e2bc62da803d4506da92975"
        },
        {
          "url": "https://git.kernel.org/stable/c/79b592e8f1b435796cbc2722190368e3e8ffd7a1"
        }
      ],
      "title": "ext4: drop extent cache when splitting extent fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45899",
    "datePublished": "2026-05-27T12:17:08.447Z",
    "dateReserved": "2026-05-13T15:03:33.083Z",
    "dateUpdated": "2026-05-30T10:41:44.680Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}