CVE-2026-98447 (GCVE-0-2026-98447)
Vulnerability from cvelistv5
Published
2026-10-18 15:14
Modified
2026-10-19 09:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: xfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots LOLLM noticed that the inode btree root formatting methods copy too many bytes -- there's only one set of keys in node blocks, not two. This causes memory corruption of whatever's beyond the buffers.
Impacted products
Vendor Product Version
Linux Linux Version: f0415af60f482a2192065be8b334b409495ca8a3
Version: f0415af60f482a2192065be8b334b409495ca8a3
Version: f0415af60f482a2192065be8b334b409495ca8a3
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Show details on NVD website


{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/libxfs/xfs_rtrefcount_btree.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d46492fb8018d12d00651b06b9d240e747110b38",
              "status": "affected",
              "version": "f0415af60f482a2192065be8b334b409495ca8a3",
              "versionType": "git"
            },
            {
              "lessThan": "2703b954d306ebfe3b11e33e259759329c11b690",
              "status": "affected",
              "version": "f0415af60f482a2192065be8b334b409495ca8a3",
              "versionType": "git"
            },
            {
              "lessThan": "fe2f9135df43db849e74f03956d322ac20b59af7",
              "status": "affected",
              "version": "f0415af60f482a2192065be8b334b409495ca8a3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/libxfs/xfs_rtrefcount_btree.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.55",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.9",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots\n\nLOLLM noticed that the inode btree root formatting methods copy too many\nbytes -- there\u0027s only one set of keys in node blocks, not two.  This\ncauses memory corruption of whatever\u0027s beyond the buffers."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:19:42.728Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d46492fb8018d12d00651b06b9d240e747110b38"
        },
        {
          "url": "https://git.kernel.org/stable/c/2703b954d306ebfe3b11e33e259759329c11b690"
        },
        {
          "url": "https://git.kernel.org/stable/c/fe2f9135df43db849e74f03956d322ac20b59af7"
        }
      ],
      "title": "xfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98447",
    "datePublished": "2026-10-18T15:14:57.561Z",
    "dateReserved": "2026-09-25T10:25:14.349Z",
    "dateUpdated": "2026-10-19T09:19:42.728Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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