CVE-2026-99142 (GCVE-0-2026-99142)

Vulnerability from cvelistv5 – Published: 2026-10-28 10:34 – Updated: 2026-10-28 10:34
VLAI
Title
tracing: Check operator stack capacity before pushing
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: Check operator stack capacity before pushing predicate_parse() uses the first operator stack entry before processing any opening parentheses. A push then increments top before writing. The existing check still permits that write when top already points to the last allocated entry, which can access beyond the operator stack. Reject the push when top reaches the last allocated entry.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 39f7c41c908bc82947ce47cdd021520ff486c53f , < a866a8a753922cdf7710b8eb3f686dc0efc06505 (git)
Affected: 39f7c41c908bc82947ce47cdd021520ff486c53f , < 75e894f92417390f0ef44fd350f2d3634c784876 (git)
Affected: 39f7c41c908bc82947ce47cdd021520ff486c53f , < c47a7b11bcb3d45e29723afcf6336866476b1d08 (git)
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Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.18.59 , ≤ 6.18.* (semver)
Unaffected: 7.2.13 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Check operator stack capacity before pushing\n\npredicate_parse() uses the first operator stack entry before processing\nany opening parentheses. A push then increments top before writing.\nThe existing check still permits that write when top already points to\nthe last allocated entry, which can access beyond the operator stack.\n\nReject the push when top reaches the last allocated entry."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-10-28T10:34:53.839Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/c47a7b11bcb3d45e29723afcf6336866476b1d08"
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      "title": "tracing: Check operator stack capacity before pushing",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-99142",
    "datePublished": "2026-10-28T10:34:53.839Z",
    "dateReserved": "2026-09-25T10:25:14.395Z",
    "dateUpdated": "2026-10-28T10:34:53.839Z",
    "state": "PUBLISHED"
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      "id": "msrc_CVE-2026-99142",
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      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "tracing: Check operator stack capacity before pushing",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-99142.json",
      "version": "1"
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Check operator stack capacity before pushing\n\npredicate_parse() uses the first operator stack entry before processing\nany opening parentheses. A push then increments top before writing.\nThe existing check still permits that write when top already points to\nthe last allocated entry, which can access beyond the operator stack.\n\nReject the push when top reaches the last allocated entry."
          }
        ],
        "id": "CVE-2026-99142",
        "lastModified": "2026-10-28T11:17:34.207",
        "metrics": {},
        "published": "2026-10-28T11:17:34.207",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}



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