CVE-2026-64299 (GCVE-0-2026-64299)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-07-27 04:59
VLAI
Title
tracing: Prevent out-of-bounds read in glob matching
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.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 60f1d5e3bac44b598f67d36062da96c095d2b700 , < 265f3a690f6c7d69ef7d2ca50b04b4853a211df3 (git)
Affected: 60f1d5e3bac44b598f67d36062da96c095d2b700 , < ee5b8888d3248618251fb69a2fad92afcb81557e (git)
Affected: 60f1d5e3bac44b598f67d36062da96c095d2b700 , < 56d4c9ab84714eebb285a2fee68aaedf81e3ef15 (git)
Affected: 60f1d5e3bac44b598f67d36062da96c095d2b700 , < 35ae19764eabfe9c29029d3b5713c86e6855acdf (git)
Affected: 60f1d5e3bac44b598f67d36062da96c095d2b700 , < ebb55902856973906c8bb339a3a34824ed4a5086 (git)
Affected: 60f1d5e3bac44b598f67d36062da96c095d2b700 , < 2dad64a97e1df47f5d9ccb17fa319aa348617226 (git)
Affected: 60f1d5e3bac44b598f67d36062da96c095d2b700 , < e5d5f3bd053a5f14787526c9f0f55ef900d43ac6 (git)
Affected: 60f1d5e3bac44b598f67d36062da96c095d2b700 , < 0a6070839b1ef276d5b05bedfb787743e140fb17 (git)
Create a notification for this product.
Linux Linux Affected: 4.10
Unaffected: 0 , < 4.10 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.96 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2-rc3 , ≤ * (original_commit_for_fix)
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          "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."
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    "datePublished": "2026-07-25T08:49:35.742Z",
    "dateReserved": "2026-07-19T15:36:31.778Z",
    "dateUpdated": "2026-07-27T04:59:33.536Z",
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    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T16:46:16Z",
      "cve": "CVE-2026-64299",
      "id": "CVE-2026-64299",
      "initial_release_date": "2026-07-25T16:46:16Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64299",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64299.json",
      "version": "2"
    }
  }
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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