FKIE_CVE-2026-64299

Vulnerability from fkie_nvd - Published: 2026-07-25 10:17 - Updated: 2026-07-27 05:16
Severity
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: Prevent out-of-bounds read in glob matching String event fields are not necessarily NUL-terminated, so the filter predicate functions (filter_pred_string(), filter_pred_strloc() and filter_pred_strrelloc()) pass the field length to the regex match callbacks, and the length-aware matchers honour it. regex_match_glob() was the exception: it ignored the length and called glob_match(), which scans the string until it hits a NUL byte. Some string fields are not NUL-terminated. One example is the dynamic char array of the xfs_* namespace tracepoints, which is copied without a trailing NUL. For such a field, glob matching reads past the end of the event field, causing a KASAN slab-out-of-bounds read in glob_match(), reached via regex_match_glob() and filter_match_preds() from the xfs_lookup tracepoint. Add a length-bounded glob_match_len() and use it from regex_match_glob() so glob matching always stops at the field boundary. The matching loop is factored into a shared helper so glob_match() keeps its behaviour.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0a6070839b1ef276d5b05bedfb787743e140fb17
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/265f3a690f6c7d69ef7d2ca50b04b4853a211df3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2dad64a97e1df47f5d9ccb17fa319aa348617226
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35ae19764eabfe9c29029d3b5713c86e6855acdf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/56d4c9ab84714eebb285a2fee68aaedf81e3ef15
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e5d5f3bd053a5f14787526c9f0f55ef900d43ac6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ebb55902856973906c8bb339a3a34824ed4a5086
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ee5b8888d3248618251fb69a2fad92afcb81557e
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/linux/glob.h",
            "kernel/trace/trace_events_filter.c",
            "lib/glob.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "265f3a690f6c7d69ef7d2ca50b04b4853a211df3",
              "status": "affected",
              "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
              "versionType": "git"
            },
            {
              "lessThan": "ee5b8888d3248618251fb69a2fad92afcb81557e",
              "status": "affected",
              "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
              "versionType": "git"
            },
            {
              "lessThan": "56d4c9ab84714eebb285a2fee68aaedf81e3ef15",
              "status": "affected",
              "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
              "versionType": "git"
            },
            {
              "lessThan": "35ae19764eabfe9c29029d3b5713c86e6855acdf",
              "status": "affected",
              "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
              "versionType": "git"
            },
            {
              "lessThan": "ebb55902856973906c8bb339a3a34824ed4a5086",
              "status": "affected",
              "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
              "versionType": "git"
            },
            {
              "lessThan": "2dad64a97e1df47f5d9ccb17fa319aa348617226",
              "status": "affected",
              "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
              "versionType": "git"
            },
            {
              "lessThan": "e5d5f3bd053a5f14787526c9f0f55ef900d43ac6",
              "status": "affected",
              "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
              "versionType": "git"
            },
            {
              "lessThan": "0a6070839b1ef276d5b05bedfb787743e140fb17",
              "status": "affected",
              "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/linux/glob.h",
            "kernel/trace/trace_events_filter.c",
            "lib/glob.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.10"
            },
            {
              "lessThan": "4.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.96",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc3",
              "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\ntracing: Prevent out-of-bounds read in glob matching\n\nString event fields are not necessarily NUL-terminated, so the filter\npredicate functions (filter_pred_string(), filter_pred_strloc() and\nfilter_pred_strrelloc()) pass the field length to the regex match\ncallbacks, and the length-aware matchers honour it.\n\nregex_match_glob() was the exception: it ignored the length and called\nglob_match(), which scans the string until it hits a NUL byte. Some\nstring fields are not NUL-terminated. One example is the dynamic char\narray of the xfs_* namespace tracepoints, which is copied without a\ntrailing NUL. For such a field, glob matching reads past the end of\nthe event field, causing a KASAN slab-out-of-bounds read in\nglob_match(), reached via regex_match_glob() and filter_match_preds()\nfrom the xfs_lookup tracepoint.\n\nAdd a length-bounded glob_match_len() and use it from regex_match_glob()\nso glob matching always stops at the field boundary. The matching loop\nis factored into a shared helper so glob_match() keeps its behaviour."
    }
  ],
  "id": "CVE-2026-64299",
  "lastModified": "2026-07-27T05:16:40.550",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-25T10:17:10.793",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0a6070839b1ef276d5b05bedfb787743e140fb17"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/265f3a690f6c7d69ef7d2ca50b04b4853a211df3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2dad64a97e1df47f5d9ccb17fa319aa348617226"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/35ae19764eabfe9c29029d3b5713c86e6855acdf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/56d4c9ab84714eebb285a2fee68aaedf81e3ef15"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e5d5f3bd053a5f14787526c9f0f55ef900d43ac6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ebb55902856973906c8bb339a3a34824ed4a5086"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ee5b8888d3248618251fb69a2fad92afcb81557e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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