CVE-2026-98315

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: ntfs: protect runlist updates with the runlist lock ntfs_non_resident_attr_shrink() calls runlist helpers that require the runlist write lock, but did not hold it while freeing clusters and truncating the runlist. Serialize those operations and the resident conversion with the runlist lock. ntfs_attr_map_cluster() can merge a newly allocated run before updating mapping pairs. If the update fails, free the clusters and restore both the in-memory runlist and on-disk mapping pairs from a saved runlist. Mark the volume in error if either rollback step fails.

Severity

HIGH

CVSS score

7.8 (v3.1)

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-10-06 09:18:23.200000

Last modified

2026-10-19 10:18:33.630000

View original CVE JSON

{
  "id": "CVE-2026-98315",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-10-06T09:18:23.200",
  "lastModified": "2026-10-19T10:18:33.630",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: protect runlist updates with the runlist lock\n\nntfs_non_resident_attr_shrink() calls runlist helpers that require the\nrunlist write lock, but did not hold it while freeing clusters and\ntruncating the runlist. Serialize those operations and the resident\nconversion with the runlist lock.\n\nntfs_attr_map_cluster() can merge a newly allocated run before updating\nmapping pairs. If the update fails, free the clusters and restore both\nthe in-memory runlist and on-disk mapping pairs from a saved runlist.\nMark the volume in error if either rollback step fails."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "fs/ntfs/attrib.c",
            "fs/ntfs/attrib.h",
            "fs/ntfs/attrlist.c",
            "fs/ntfs/attrlist.h",
            "fs/ntfs/compress.c",
            "fs/ntfs/file.c",
            "fs/ntfs/inode.c",
            "fs/ntfs/mft.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "495e90fa334828d4119061e2726af51d0a0fb4ed",
              "lessThan": "742797432e8c9b0dd54ecc523c185e26b09d79a0",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "495e90fa334828d4119061e2726af51d0a0fb4ed",
              "lessThan": "91709ba5d6d709b2b663287b7e871e2c6b480502",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "fs/ntfs/attrib.c",
            "fs/ntfs/attrib.h",
            "fs/ntfs/attrlist.c",
            "fs/ntfs/attrlist.h",
            "fs/ntfs/compress.c",
            "fs/ntfs/file.c",
            "fs/ntfs/inode.c",
            "fs/ntfs/mft.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "7.1",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "7.1",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.8",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "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:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/742797432e8c9b0dd54ecc523c185e26b09d79a0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/91709ba5d6d709b2b663287b7e871e2c6b480502",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}