Vulnerability-Lookup

CVE-2026-98872 (GCVE-0-2026-98872)

Vulnerability from cvelistv5 – Published: 2026-10-23 11:37 – Updated: 2026-10-23 11:37

Title

freevxfs: don't BUG() on unknown typed-extent type

Summary

In the Linux kernel, the following vulnerability has been resolved: freevxfs: don't BUG() on unknown typed-extent type vxfs_bmap_typed() handles four typed-extent types and calls BUG() in its default case, so an on-disk typed extent with any other type value crashes the kernel. It is reachable from ioctl(FIBMAP) on a regular file: kernel BUG at fs/freevxfs/vxfs_bmap.c:230! RIP: vxfs_bmap_typed fs/freevxfs/vxfs_bmap.c:230 [inline] vxfs_bmap1+0x128a/0x12d0 fs/freevxfs/vxfs_bmap.c:257 Replace the BUG() with WARN_ON_ONCE() and return 0 -- the value vxfs_bmap_typed() already returns on failure (and from the DEV4 case above); vxfs_getblk() maps 0 to -EIO, so the ioctl fails cleanly.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7061 records in the last 180 days details

References

7 references

URL	Tags
https://git.kernel.org/stable/c/fe40a19d571cbb584…
https://git.kernel.org/stable/c/500e9d5bf9eff2096…
https://git.kernel.org/stable/c/f1f2d54a576f0e413…
https://git.kernel.org/stable/c/7ada9807e37103b41…
https://git.kernel.org/stable/c/1284d687d46953fff…
https://git.kernel.org/stable/c/405f13d7b270913e0…
https://git.kernel.org/stable/c/704d48d81dc41470e…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fe40a19d571cbb584eea46038ee919d8712b2d2c (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 500e9d5bf9eff2096a21b7ac25a0a06ca46ab821 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f1f2d54a576f0e4133b979e545abcfefd439c300 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7ada9807e37103b41f586d34e3075e1209182b65 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1284d687d46953fff9c0d969df108114611aca8b (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 405f13d7b270913e06e8e2b4de568985f94ef7d6 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 704d48d81dc41470e108811c32c577ada66192d4 (git) Affected: 0 , < 5.10.271 (semver) Affected: 0 , < 5.15.222 (semver) Affected: 0 , < 6.1.189 (semver) Affected: 0 , < 6.6.158 (semver) Affected: 0 , < 6.12.111 (semver) Affected: 0 , < 6.18.53 (semver)	guessed
Linux	Linux	Unaffected: 5.10.271 , ≤ 5.10.* (semver) Unaffected: 5.15.222 , ≤ 5.15.* (semver) Unaffected: 6.1.189 , ≤ 6.1.* (semver) Unaffected: 6.6.158 , ≤ 6.6.* (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/freevxfs/vxfs_bmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
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              "lessThan": "f1f2d54a576f0e4133b979e545abcfefd439c300",
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              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
              "lessThan": "1284d687d46953fff9c0d969df108114611aca8b",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "405f13d7b270913e06e8e2b4de568985f94ef7d6",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
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              "lessThan": "5.10.271",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.222",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.189",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.158",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.111",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.53",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/freevxfs/vxfs_bmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.271",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "5.15.222",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.189",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfreevxfs: don\u0027t BUG() on unknown typed-extent type\n\nvxfs_bmap_typed() handles four typed-extent types and calls BUG() in\nits default case, so an on-disk typed extent with any other type value\ncrashes the kernel. It is reachable from ioctl(FIBMAP) on a regular\nfile:\n\n  kernel BUG at fs/freevxfs/vxfs_bmap.c:230!\n  RIP: vxfs_bmap_typed fs/freevxfs/vxfs_bmap.c:230 [inline]\n       vxfs_bmap1+0x128a/0x12d0 fs/freevxfs/vxfs_bmap.c:257\n\nReplace the BUG() with WARN_ON_ONCE() and return 0 -- the value\nvxfs_bmap_typed() already returns on failure (and from the DEV4 case\nabove); vxfs_getblk() maps 0 to -EIO, so the ioctl fails cleanly."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-23T11:37:11.214Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fe40a19d571cbb584eea46038ee919d8712b2d2c"
        },
        {
          "url": "https://git.kernel.org/stable/c/500e9d5bf9eff2096a21b7ac25a0a06ca46ab821"
        },
        {
          "url": "https://git.kernel.org/stable/c/f1f2d54a576f0e4133b979e545abcfefd439c300"
        },
        {
          "url": "https://git.kernel.org/stable/c/7ada9807e37103b41f586d34e3075e1209182b65"
        },
        {
          "url": "https://git.kernel.org/stable/c/1284d687d46953fff9c0d969df108114611aca8b"
        },
        {
          "url": "https://git.kernel.org/stable/c/405f13d7b270913e06e8e2b4de568985f94ef7d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/704d48d81dc41470e108811c32c577ada66192d4"
        }
      ],
      "title": "freevxfs: don\u0027t BUG() on unknown typed-extent type",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98872",
    "datePublished": "2026-10-23T11:37:11.214Z",
    "dateReserved": "2026-09-25T10:25:14.377Z",
    "dateUpdated": "2026-10-23T11:37:11.214Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "fs/freevxfs/vxfs_bmap.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
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                    "versionType": "git"
                  },
                  {
                    "lessThan": "500e9d5bf9eff2096a21b7ac25a0a06ca46ab821",
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                    "versionType": "git"
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                  {
                    "lessThan": "f1f2d54a576f0e4133b979e545abcfefd439c300",
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                    "versionType": "git"
                  },
                  {
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                    "versionType": "git"
                  },
                  {
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                    "versionType": "git"
                  },
                  {
                    "lessThan": "405f13d7b270913e06e8e2b4de568985f94ef7d6",
                    "status": "affected",
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                    "versionType": "git"
                  },
                  {
                    "lessThan": "704d48d81dc41470e108811c32c577ada66192d4",
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                    "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                    "versionType": "git"
                  },
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                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  },
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                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.1.189",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.6.158",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.12.111",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.18.53",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "fs/freevxfs/vxfs_bmap.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.271",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.222",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.189",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.158",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.111",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.53",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.2",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfreevxfs: don\u0027t BUG() on unknown typed-extent type\n\nvxfs_bmap_typed() handles four typed-extent types and calls BUG() in\nits default case, so an on-disk typed extent with any other type value\ncrashes the kernel. It is reachable from ioctl(FIBMAP) on a regular\nfile:\n\n  kernel BUG at fs/freevxfs/vxfs_bmap.c:230!\n  RIP: vxfs_bmap_typed fs/freevxfs/vxfs_bmap.c:230 [inline]\n       vxfs_bmap1+0x128a/0x12d0 fs/freevxfs/vxfs_bmap.c:257\n\nReplace the BUG() with WARN_ON_ONCE() and return 0 -- the value\nvxfs_bmap_typed() already returns on failure (and from the DEV4 case\nabove); vxfs_getblk() maps 0 to -EIO, so the ioctl fails cleanly."
          }
        ],
        "id": "CVE-2026-98872",
        "lastModified": "2026-10-23T12:18:20.623",
        "metrics": {},
        "published": "2026-10-23T12:18:20.623",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/1284d687d46953fff9c0d969df108114611aca8b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/405f13d7b270913e06e8e2b4de568985f94ef7d6"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/500e9d5bf9eff2096a21b7ac25a0a06ca46ab821"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/704d48d81dc41470e108811c32c577ada66192d4"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7ada9807e37103b41f586d34e3075e1209182b65"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f1f2d54a576f0e4133b979e545abcfefd439c300"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/fe40a19d571cbb584eea46038ee919d8712b2d2c"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}

FKIE_CVE-2026-98872

Vulnerability from fkie_nvd - Published: 2026-10-23 12:18 - Updated: 2026-10-23 12:18

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1284d687d46953fff9c0d969df108114611aca8b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/405f13d7b270913e06e8e2b4de568985f94ef7d6
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/500e9d5bf9eff2096a21b7ac25a0a06ca46ab821
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/704d48d81dc41470e108811c32c577ada66192d4
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7ada9807e37103b41f586d34e3075e1209182b65
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f1f2d54a576f0e4133b979e545abcfefd439c300
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fe40a19d571cbb584eea46038ee919d8712b2d2c

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/freevxfs/vxfs_bmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fe40a19d571cbb584eea46038ee919d8712b2d2c",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "500e9d5bf9eff2096a21b7ac25a0a06ca46ab821",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "f1f2d54a576f0e4133b979e545abcfefd439c300",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "7ada9807e37103b41f586d34e3075e1209182b65",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "1284d687d46953fff9c0d969df108114611aca8b",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "405f13d7b270913e06e8e2b4de568985f94ef7d6",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "704d48d81dc41470e108811c32c577ada66192d4",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "5.10.271",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.222",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.189",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.158",
              "status": "affected",
              "version": "0",
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            },
            {
              "lessThan": "6.12.111",
              "status": "affected",
              "version": "0",
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            },
            {
              "lessThan": "6.18.53",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/freevxfs/vxfs_bmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfreevxfs: don\u0027t BUG() on unknown typed-extent type\n\nvxfs_bmap_typed() handles four typed-extent types and calls BUG() in\nits default case, so an on-disk typed extent with any other type value\ncrashes the kernel. It is reachable from ioctl(FIBMAP) on a regular\nfile:\n\n  kernel BUG at fs/freevxfs/vxfs_bmap.c:230!\n  RIP: vxfs_bmap_typed fs/freevxfs/vxfs_bmap.c:230 [inline]\n       vxfs_bmap1+0x128a/0x12d0 fs/freevxfs/vxfs_bmap.c:257\n\nReplace the BUG() with WARN_ON_ONCE() and return 0 -- the value\nvxfs_bmap_typed() already returns on failure (and from the DEV4 case\nabove); vxfs_getblk() maps 0 to -EIO, so the ioctl fails cleanly."
    }
  ],
  "id": "CVE-2026-98872",
  "lastModified": "2026-10-23T12:18:20.623",
  "metrics": {},
  "published": "2026-10-23T12:18:20.623",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1284d687d46953fff9c0d969df108114611aca8b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/405f13d7b270913e06e8e2b4de568985f94ef7d6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/500e9d5bf9eff2096a21b7ac25a0a06ca46ab821"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/704d48d81dc41470e108811c32c577ada66192d4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7ada9807e37103b41f586d34e3075e1209182b65"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f1f2d54a576f0e4133b979e545abcfefd439c300"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fe40a19d571cbb584eea46038ee919d8712b2d2c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-35FJ-5V77-5RPX

Vulnerability from github – Published: 2026-10-23 12:31 – Updated: 2026-10-23 12:31

Details

In the Linux kernel, the following vulnerability has been resolved:

freevxfs: don't BUG() on unknown typed-extent type

vxfs_bmap_typed() handles four typed-extent types and calls BUG() in its default case, so an on-disk typed extent with any other type value crashes the kernel. It is reachable from ioctl(FIBMAP) on a regular file:

kernel BUG at fs/freevxfs/vxfs_bmap.c:230! RIP: vxfs_bmap_typed fs/freevxfs/vxfs_bmap.c:230 [inline] vxfs_bmap1+0x128a/0x12d0 fs/freevxfs/vxfs_bmap.c:257

Replace the BUG() with WARN_ON_ONCE() and return 0 -- the value vxfs_bmap_typed() already returns on failure (and from the DEV4 case above); vxfs_getblk() maps 0 to -EIO, so the ioctl fails cleanly.

Show details on source website

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To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-98872"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-23T12:18:20Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfreevxfs: don\u0027t BUG() on unknown typed-extent type\n\nvxfs_bmap_typed() handles four typed-extent types and calls BUG() in\nits default case, so an on-disk typed extent with any other type value\ncrashes the kernel. It is reachable from ioctl(FIBMAP) on a regular\nfile:\n\n  kernel BUG at fs/freevxfs/vxfs_bmap.c:230!\n  RIP: vxfs_bmap_typed fs/freevxfs/vxfs_bmap.c:230 [inline]\n       vxfs_bmap1+0x128a/0x12d0 fs/freevxfs/vxfs_bmap.c:257\n\nReplace the BUG() with WARN_ON_ONCE() and return 0 -- the value\nvxfs_bmap_typed() already returns on failure (and from the DEV4 case\nabove); vxfs_getblk() maps 0 to -EIO, so the ioctl fails cleanly.",
  "id": "GHSA-35fj-5v77-5rpx",
  "modified": "2026-10-23T12:31:36Z",
  "published": "2026-10-23T12:31:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98872"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1284d687d46953fff9c0d969df108114611aca8b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/405f13d7b270913e06e8e2b4de568985f94ef7d6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/500e9d5bf9eff2096a21b7ac25a0a06ca46ab821"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/704d48d81dc41470e108811c32c577ada66192d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ada9807e37103b41f586d34e3075e1209182b65"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1f2d54a576f0e4133b979e545abcfefd439c300"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fe40a19d571cbb584eea46038ee919d8712b2d2c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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CVE-2026-98872 (GCVE-0-2026-98872)

FKIE_CVE-2026-98872

GHSA-35FJ-5V77-5RPX

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