{
  "cveId": "CVE-2026-74262",
  "url": "https://patchblox.com/security/cve/CVE-2026-74262",
  "summary": "CVE-2026-74262 is fixed in 56 products on 1 platform, first by DEBIAN-CVE-2026-74262, released August 15, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  kcm: use WRITE_ONCE() when changing lower socket...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  kcm: use WRITE_ONCE() when changing lower socket callbacks  kcm_attach() replaces a live lower TCP socket\u0027s sk_data_ready and sk_write_space callbacks with KCM handlers, and kcm_unattach() restores them later. Those callback-pointer updates are still plain stores even though the same fields can be read and invoked concurrently on other CPUs.  If another CPU observes an older callback snapshot after the live field has already been restored, callback execution can run with a mismatched target and sk_user_data state, leading to stale or misdirected wakeups.  Use WRITE_ONCE() for the callback replacement and restore operations so these shared callback fields follow the same visibility contract already established by the earlier 4022 fixes.",
  "published": "2026-08-15T06:22:25Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00185,
  "epssPercentile": 0.08173,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
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      "product": "python3-perf6.12-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.12.100-125.179.amzn2023",
      "fix": "ALAS2023-2026-2057",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2057",
      "released": "2026-08-17T09:00:00Z"
    },
    {
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      "product": "python3-perf6.18",
      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
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      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}