{
  "cveId": "CVE-2026-23066",
  "url": "https://patchblox.com/security/cve/CVE-2026-23066",
  "summary": "CVE-2026-23066 is fixed in 15 products on 1 platform, first by DEBIAN-CVE-2026-23066, released February 4, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "kernel: In the Linux kernel, the following vulnerability has been resolved:\nrxrpc: Fix recvmsg() unconditional requeue\nIf rxr...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:\nrxrpc: Fix recvmsg() unconditional requeue\nIf rxrpc_recvmsg() fails because MSG_DONTWAIT was specified but the call at\nthe front of the recvmsg queue already has its mutex locked, it requeues\nthe call - whether or not the call is already queued.  The call may be on\nthe queue because MSG_PEEK was also passed and so the call was not dequeued\nor because the I/O thread requeued it.\nThe unconditional requeue may then corrupt the recvmsg queue, leading to\nthings like UAFs or refcount underruns.\nFix this by only requeuing the call if it isn\u0027t already on the queue - and\nmoving it to the front if it is already queued.  If we don\u0027t queue it, we\nhave to put the ref we obtained by dequeuing it.\nAlso, MSG_PEEK doesn\u0027t dequeue the call so shouldn\u0027t call\nrxrpc_notify_socket() for the call if we didn\u0027t use up all the data on the\nqueue, so fix that also.",
  "published": "2026-02-04T00:00:00Z",
  "severity": "moderate",
  "cvss": 7.4,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00122,
  "epssPercentile": 0.01961,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dtb-aarch64",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel",
      "release": "RHEL 10",
      "fixedVersion": "6.12.0-55.69.1.el10_0",
      "fix": "RHSA-2026:9095",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-9095",
      "released": "2026-03-12T22:28:45Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "SUSE-SU-2026:20931-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20931-1",
      "released": "2026-03-25T08:48:43Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "SUSE-SU-2026:20931-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20931-1",
      "released": "2026-03-25T08:48:43Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "SUSE-SU-2026:20931-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20931-1",
      "released": "2026-03-25T08:48:43Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default-base",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1.160000.2.8",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default-base",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.27.1.160000.2.8",
      "fix": "SUSE-SU-2026:20931-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20931-1",
      "released": "2026-03-25T08:48:43Z"
    },
    {
      "platform": "linux",
      "product": "kernel-docs",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-docs",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "SUSE-SU-2026:20931-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20931-1",
      "released": "2026-03-25T08:48:43Z"
    },
    {
      "platform": "linux",
      "product": "kernel-kvmsmall",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-kvmsmall",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "SUSE-SU-2026:20931-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20931-1",
      "released": "2026-03-25T08:48:43Z"
    },
    {
      "platform": "linux",
      "product": "kernel-obs-build",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-obs-qa",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-obs-qa",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "SUSE-SU-2026:20931-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20931-1",
      "released": "2026-03-25T08:48:43Z"
    },
    {
      "platform": "linux",
      "product": "kernel-rt",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-source",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-source",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "SUSE-SU-2026:20931-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20931-1",
      "released": "2026-03-25T08:48:43Z"
    },
    {
      "platform": "linux",
      "product": "kernel-syms",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-syms",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "SUSE-SU-2026:20931-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20931-1",
      "released": "2026-03-25T08:48:43Z"
    },
    {
      "platform": "linux",
      "product": "kernel-zfcpdump",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "OPENSUSE-SU-2026:20416-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20416-1",
      "released": "2026-03-25T08:49:52Z"
    },
    {
      "platform": "linux",
      "product": "kernel-zfcpdump",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.27.1",
      "fix": "SUSE-SU-2026:20931-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20931-1",
      "released": "2026-03-25T08:48:43Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.176-1",
      "fix": "DEBIAN-CVE-2026-23066",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23066",
      "released": "2026-02-04T17:16:17Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.85-1",
      "fix": "DEBIAN-CVE-2026-23066",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23066",
      "released": "2026-02-04T17:16:17Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.18.8-1",
      "fix": "DEBIAN-CVE-2026-23066",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23066",
      "released": "2026-02-04T17:16:17Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}