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CVE-2026-43210 tracing: ring-buffer: Fix to check event length before using

🗓️ 06 May 2026 11:28:13Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 27 Views

Check event length in ring buffer before use to prevent invalid memory access during validation.

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/ring_buffer.c"
    ],
    "versions": [
      {
        "version": "5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55",
        "lessThan": "b4700c089a10f89de3a5149d57f8a58306458982",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55",
        "lessThan": "5026010110a5ad2268d8c23e1e286ab7c736f7ac",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55",
        "lessThan": "9eb80e54494ef1efef8a64bec4ffa672c9cf411e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55",
        "lessThan": "912b0ee248c529a4f45d1e7f568dc1adddbf2a4a",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/trace/ring_buffer.c"
    ],
    "versions": [
      {
        "version": "6.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.12",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.75",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.16",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.6",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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