CVE-2026-64299 (GCVE-0-2026-64299)
Vulnerability from cvelistv5
Published
2026-07-25 08:49
Modified
2026-10-19 20:38
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
Impacted products
Vendor Product Version
Linux Linux Version: 60f1d5e3bac44b598f67d36062da96c095d2b700
Version: 60f1d5e3bac44b598f67d36062da96c095d2b700
Version: 60f1d5e3bac44b598f67d36062da96c095d2b700
Version: 60f1d5e3bac44b598f67d36062da96c095d2b700
Version: 60f1d5e3bac44b598f67d36062da96c095d2b700
Version: 60f1d5e3bac44b598f67d36062da96c095d2b700
Version: 60f1d5e3bac44b598f67d36062da96c095d2b700
Version: 60f1d5e3bac44b598f67d36062da96c095d2b700
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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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.261\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.212\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.178\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.145\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.96\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.39\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.1.4\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.2\", \"versionStartIncluding\": \"4.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-17T04:52:57.094Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-64299\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-19T20:38:22.703Z\", \"dateReserved\": \"2026-07-19T15:36:31.778Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-07-25T08:49:35.742Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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