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CVE-2025-39713 media: rainshadow-cec: fix TOCTOU race condition in rain_interrupt()

🗓️ 05 Sep 2025 17:21:20Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 10 Views

Resolved TOCTOU race in rain_interrupt by moving lock before buffer check to prevent overflow.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/media/cec/usb/rainshadow/rainshadow-cec.c"
    ],
    "versions": [
      {
        "version": "0f314f6c2e77beb1a232be21dd6be4e1849ba5ac",
        "lessThan": "2964dbe631fd21ad7873b1752b895548d3c12496",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0f314f6c2e77beb1a232be21dd6be4e1849ba5ac",
        "lessThan": "6aaef1a75985865d8c6c5b65fb54152060faba48",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0f314f6c2e77beb1a232be21dd6be4e1849ba5ac",
        "lessThan": "fbc81e78d75bf28972bc22b1599559557b1a1b83",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0f314f6c2e77beb1a232be21dd6be4e1849ba5ac",
        "lessThan": "3c3e33b7edca7a2d6a96801f287f9faeb684d655",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0f314f6c2e77beb1a232be21dd6be4e1849ba5ac",
        "lessThan": "1c2769dc80255824542ea5a4ff1a07dcdeb1603f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0f314f6c2e77beb1a232be21dd6be4e1849ba5ac",
        "lessThan": "ed905fe7cba03cf22ae0b84cf1b73cd1c070423a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0f314f6c2e77beb1a232be21dd6be4e1849ba5ac",
        "lessThan": "ff9dd3db6cd4c6b54a2ecbc58151bea4ec63bc59",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0f314f6c2e77beb1a232be21dd6be4e1849ba5ac",
        "lessThan": "7af160aea26c7dc9e6734d19306128cce156ec40",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/media/cec/usb/rainshadow/rainshadow-cec.c"
    ],
    "versions": [
      {
        "version": "4.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.12",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.4.297",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.241",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.190",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.149",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.103",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.44",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.16.4",
        "lessThanOrEqual": "6.16.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.17",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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