{
  "cveId": "CVE-2026-23041",
  "url": "https://patchblox.com/security/cve/CVE-2026-23041",
  "summary": "CVE-2026-23041 is fixed in linux on 1 platform by DEBIAN-CVE-2026-23041 (version 6.18.8-1), released February 4, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  bnxt_en: Fix NULL pointer crash in bnxt_ptp_enab...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup  When bnxt_init_one() fails during initialization (e.g., bnxt_init_int_mode returns -ENODEV), the error path calls bnxt_free_hwrm_resources() which destroys the DMA pool and sets bp-\u003Ehwrm_dma_pool to NULL. Subsequently, bnxt_ptp_clear() is called, which invokes ptp_clock_unregister().  Since commit a60fc3294a37 (\u0022ptp: rework ptp_clock_unregister() to disable events\u0022), ptp_clock_unregister() now calls ptp_disable_all_events(), which in turn invokes the driver\u0027s .enable() callback (bnxt_ptp_enable()) to disable PTP events before completing the unregistration.  bnxt_ptp_enable() attempts to send HWRM commands via bnxt_ptp_cfg_pin() and bnxt_ptp_cfg_event(), both of which call hwrm_req_init(). This function tries to allocate from bp-\u003Ehwrm_dma_pool, causing a NULL pointer dereference:    bnxt_en 0000:01:00.0 (unnamed net_device) (uninitialized): bnxt_init_int_mode err: ffffffed   KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]   Call Trace:    __hwrm_req_init (drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c:72)    bnxt_ptp_enable (drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:323 drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:517)    ptp_disable_all_events (drivers/ptp/ptp_chardev.c:66)    ptp_clock_unregister (drivers/ptp/ptp_clock.c:518)    bnxt_ptp_clear (drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:1134)    bnxt_init_one (drivers/net/ethernet/broadcom/bnxt/bnxt.c:16889)  Lines are against commit f8f9c1f4d0c7 (\u0022Linux 6.19-rc3\u0022)  Fix this by clearing and unregistering ptp (bnxt_ptp_clear()) before freeing HWRM resources.",
  "published": "2026-02-04T16:16:19Z",
  "severity": "",
  "epss": 0.00172,
  "epssPercentile": 0.06635,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.18.8-1",
      "fix": "DEBIAN-CVE-2026-23041",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23041",
      "released": "2026-02-04T16:16:19Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}