{
  "cveId": "CVE-2026-80588",
  "url": "https://patchblox.com/security/cve/CVE-2026-80588",
  "summary": "CVE-2026-80588 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2026-80588, released September 4, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mptcp: reclaim forward-allocated memory on RX pa...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mptcp: reclaim forward-allocated memory on RX path errors  After commit 9db5b3cec4ec (\u0022mptcp: borrow forward memory from subflow\u0022), errors in the receive path prior to queueing skbs into the receive queue do not trigger forward-allocated memory reclaiming.  Prevent forward memory from growing unboundedly in pathological drop scenarios by explicitly reclaiming memory when skbs are dropped.",
  "published": "2026-08-26T15:17:15Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00335,
  "epssPercentile": 0.26983,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.18.48-107.148",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.10-1",
      "fix": "DEBIAN-CVE-2026-80588",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80588",
      "released": "2026-09-04T01:46:23Z"
    },
    {
      "platform": "linux",
      "product": "microvm-kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.48-107.148.amzn2023",
      "fix": "ALAS2023-2026-3139",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3139",
      "released": "2026-09-28T09:00:00Z"
    }
  ],
  "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"
  }
}