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CVE-2026-89497

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: orangefs: skip leading spaces before parsing client debug masks orangefs_prepare_cdm_array() sizes each client debug keyword buffer with strcspn(cds_head, " "), but then parses the keyword with %s. The %s conversion skips leading whitespace, while strcspn() does not. If a client debug entry starts with a space, the allocation can be sized for an empty keyword while sscanf() copies the following non-empty token. This can write past the end of the allocated keyword buffer. Skip leading spaces before computing the keyword length so the allocation matches the string parsed by sscanf().

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-09-11 20:19:31.820000
Last modified
2026-10-19 09:17:43.813000
View original CVE JSON 
{
  "id": "CVE-2026-89497",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-11T20:19:31.820",
  "lastModified": "2026-10-19T09:17:43.813",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\norangefs: skip leading spaces before parsing client debug masks\n\norangefs_prepare_cdm_array() sizes each client debug keyword buffer\nwith strcspn(cds_head, \" \"), but then parses the keyword with %s. The\n%s conversion skips leading whitespace, while strcspn() does not.\n\nIf a client debug entry starts with a space, the allocation can be sized\nfor an empty keyword while sscanf() copies the following non-empty token.\nThis can write past the end of the allocated keyword buffer.\n\nSkip leading spaces before computing the keyword length so the allocation\nmatches the string parsed by sscanf()."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "fs/orangefs/orangefs-debugfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
              "lessThan": "173bfd69696815bcf1c052f61cb69c26cca4e443",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
              "lessThan": "995f4d05589f87452a56672270af28918c8939c3",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
              "lessThan": "0ef38d53bca5ea1375fea0d3d11e9727df064b85",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
              "lessThan": "ce748ae1181d0daf5dd0d2d906d5c1cc328c153b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
              "lessThan": "15d79c806231e62a7b746d3b42626810004e1b27",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
              "lessThan": "116d14f29a0524853c9316f32a2ac06cff5d4bf6",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
              "lessThan": "1774c5b3713add32fe15ab0d3db4b73355f94e35",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
              "lessThan": "d410cd5303ec59c7cf23dd61423752ce8e9ecb59",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "fs/orangefs/orangefs-debugfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "4.6",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "4.6",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.10.270",
              "lessThanOrEqual": "5.10.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.15.221",
              "lessThanOrEqual": "5.15.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.188",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.157",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.109",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.50",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.4",
              "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/0ef38d53bca5ea1375fea0d3d11e9727df064b85",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/116d14f29a0524853c9316f32a2ac06cff5d4bf6",
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    },
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    },
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/995f4d05589f87452a56672270af28918c8939c3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ce748ae1181d0daf5dd0d2d906d5c1cc328c153b",
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    },
    {
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    }
  ]
}