{
  "cveId": "CVE-2026-72042",
  "url": "https://patchblox.com/security/cve/CVE-2026-72042",
  "summary": "CVE-2026-72042 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2026-72042, released August 15, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "ipmi: Fix user refcount underflow in event delivery",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ipmi: Fix user refcount underflow in event delivery  ipmi_alloc_recv_msg(user) takes the temporary user reference owned by the receive message, and ipmi_free_recv_msg() drops it again. If event delivery fails after allocating receive messages for earlier users, handle_read_event_rsp() rolls those messages back with ipmi_free_recv_msg().  That rollback path still drops user-\u003Erefcount explicitly after freeing each message. The extra put can free a user that remains linked on intf-\u003Eusers, so later event delivery may dereference a freed user or trip refcount_t\u0027s addition-on-zero warning when ipmi_alloc_recv_msg() tries to acquire another reference.  Remove the stale explicit put and the now-dead user assignment. Keep the list_del() and ipmi_free_recv_msg() calls; they are the required rollback operations.",
  "published": "2026-08-15T06:21:13Z",
  "severity": "Moderate",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00173,
  "epssPercentile": 0.06816,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72042",
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.18.41-94.142",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
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      "product": "kernel6.18-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-72042",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-72042",
      "released": "2026-08-15T22:38:55Z"
    },
    {
      "platform": "linux",
      "product": "microvm-kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "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"
    },
    {
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      "fixedVersion": "1:6.18.41-94.142.amzn2023",
      "fix": "ALAS2023-2026-2071",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2071",
      "released": "2026-08-31T09:00:00Z"
    },
    {
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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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      "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"
  }
}