CVE-2025-38568 (GCVE-0-2025-38568)

Vulnerability from cvelistv5 – Published: 2025-08-19 17:02 – Updated: 2025-09-29 05:53
VLAI?
Title
net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing
Summary
In the Linux kernel, the following vulnerability has been resolved: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing TCA_MQPRIO_TC_ENTRY_INDEX is validated using NLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), which allows the value TC_QOPT_MAX_QUEUE (16). This leads to a 4-byte out-of-bounds stack write in the fp[] array, which only has room for 16 elements (0–15). Fix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f62af20bed2d9e824f51cfc97ff01bc261f40e58 , < 39491e859fd494d0b51adc5c7d54c8a7dcf1d198 (git)
Affected: f62af20bed2d9e824f51cfc97ff01bc261f40e58 , < d00e4125680f7074c4f42ce3c297336f23128e70 (git)
Affected: f62af20bed2d9e824f51cfc97ff01bc261f40e58 , < 66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86 (git)
Affected: f62af20bed2d9e824f51cfc97ff01bc261f40e58 , < f1a9dbcb7d17bf0abb325cdc984957cfabc59693 (git)
Affected: f62af20bed2d9e824f51cfc97ff01bc261f40e58 , < ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17 (git)
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    Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.102 , ≤ 6.6.* (semver)
Unaffected: 6.12.42 , ≤ 6.12.* (semver)
Unaffected: 6.15.10 , ≤ 6.15.* (semver)
Unaffected: 6.16.1 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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      "cpeApplicability": [
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: mqprio: fix stack out-of-bounds write in tc entry parsing\n\nTCA_MQPRIO_TC_ENTRY_INDEX is validated using\nNLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), which allows the value\nTC_QOPT_MAX_QUEUE (16). This leads to a 4-byte out-of-bounds stack\nwrite in the fp[] array, which only has room for 16 elements (0\u201315).\n\nFix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-09-29T05:53:57.182Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      ],
      "title": "net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38568",
    "datePublished": "2025-08-19T17:02:49.278Z",
    "dateReserved": "2025-04-16T04:51:24.025Z",
    "dateUpdated": "2025-09-29T05:53:57.182Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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