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CVE-2022-50553 tracing/hist: Fix out-of-bound write on 'action_data.var_ref_idx'

🗓️ 07 Oct 2025 15:21:14Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

This fixes kernel tracing out-of-bounds write by enlarging var_ref_idx to SYNTH_FIELDS_MAX and adding checks.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/trace/trace_events_hist.c"
    ],
    "versions": [
      {
        "version": "38b67e60b6b582e81f9db1b2e7176cbbfbd3e574",
        "lessThan": "cf79d5410a569dad1d4112b5c3c02383cca8213a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d380dcde9a07ca5de4805dee11f58a98ec0ad6ff",
        "lessThan": "0cb31bd88361edb96cfc622648717ba348f0f4dc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d380dcde9a07ca5de4805dee11f58a98ec0ad6ff",
        "lessThan": "15697f653399253f9be4ed2a1e03d795f3cfee94",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d380dcde9a07ca5de4805dee11f58a98ec0ad6ff",
        "lessThan": "b4efdc219fb8cfa066c7042e636ab8ad6d7e7494",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d380dcde9a07ca5de4805dee11f58a98ec0ad6ff",
        "lessThan": "04241956ce8825ff06e06e4083e7b692e9d5f712",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d380dcde9a07ca5de4805dee11f58a98ec0ad6ff",
        "lessThan": "82470f7d9044842618c847a7166de2b7458157a7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c78a2baf5e1fe1b38121d6b54bab77ccb81a1a86",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5.4.19",
        "lessThan": "5.4.229",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.5.6",
        "lessThan": "5.6",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/trace/trace_events_hist.c"
    ],
    "versions": [
      {
        "version": "5.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.6",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.4.229",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.163",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.87",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.0.18",
        "lessThanOrEqual": "6.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.4",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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