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tracing: Prevent out-of-bounds read in glob matching

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-64299

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-64299

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
        "lessThan": "265f3a690f6c7d69ef7d2ca50b04b4853a211df3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
        "lessThan": "ee5b8888d3248618251fb69a2fad92afcb81557e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
        "lessThan": "56d4c9ab84714eebb285a2fee68aaedf81e3ef15",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
        "lessThan": "35ae19764eabfe9c29029d3b5713c86e6855acdf",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
        "lessThan": "ebb55902856973906c8bb339a3a34824ed4a5086",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
        "lessThan": "2dad64a97e1df47f5d9ccb17fa319aa348617226",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
        "lessThan": "e5d5f3bd053a5f14787526c9f0f55ef900d43ac6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "60f1d5e3bac44b598f67d36062da96c095d2b700",
        "lessThan": "0a6070839b1ef276d5b05bedfb787743e140fb17",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "include/linux/glob.h",
      "kernel/trace/trace_events_filter.c",
      "lib/glob.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.10"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.10",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.261",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.212",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.178",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.145",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.96",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.39",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "include/linux/glob.h",
      "kernel/trace/trace_events_filter.c",
      "lib/glob.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-64299

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#41002 · Revision 1
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Publisher date
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