{
  "cveId": "CVE-2026-23433",
  "url": "https://patchblox.com/security/cve/CVE-2026-23433",
  "summary": "CVE-2026-23433 is fixed in linux on 1 platform by DEBIAN-CVE-2026-23433 (version 6.19.10-1), released April 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  arm_mpam: Fix null pointer dereference when rest...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  arm_mpam: Fix null pointer dereference when restoring bandwidth counters  When an MSC supporting memory bandwidth monitoring is brought offline and then online, mpam_restore_mbwu_state() calls __ris_msmon_read() via ipi to restore the configuration of the bandwidth counters. It doesn\u0027t care about the value read, mbwu_arg.val, and doesn\u0027t set it leading to a null pointer dereference when __ris_msmon_read() adds to it. This results in a kernel oops with a call trace such as:  Call trace: __ris_msmon_read\u002B0x19c/0x64c (P) mpam_restore_mbwu_state\u002B0xa0/0xe8 smp_call_on_cpu_callback\u002B0x1c/0x38 process_one_work\u002B0x154/0x4b4 worker_thread\u002B0x188/0x310 kthread\u002B0x11c/0x130 ret_from_fork\u002B0x10/0x20  Provide a local variable for val to avoid __ris_msmon_read() dereferencing a null pointer when adding to val.",
  "published": "2026-04-03T16:16:24Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00111,
  "epssPercentile": 0.01357,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.19.10-1",
      "fix": "DEBIAN-CVE-2026-23433",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23433",
      "released": "2026-04-03T16:16:24Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}