{
  "cveId": "CVE-2026-99066",
  "url": "https://patchblox.com/security/cve/CVE-2026-99066",
  "summary": "CVE-2026-99066 is fixed in linux on 1 platform by DEBIAN-CVE-2026-99066 (version 7.2.11-1), released October 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  can: dev: init_can_skb(): restore skb header ini...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  can: dev: init_can_skb(): restore skb header initialization  Commit 9f10374bb024 (\u0022can: remove private CAN skb headroom infrastructure\u0022) removed the skb_reset_mac_header()/skb_reset_network_header()/ skb_reset_transport_header() calls from init_can_skb(). As a result, RX skbs from alloc_can_skb() and friends again carry mac_header = 0xFFFF. When such an skb reaches packet_rcv_spkt() (SOCK_PACKET), the push length calculation overflows and triggers skb_under_panic -\u003E kernel BUG -\u003E full machine panic.  The same issue was originally reported in 2014 on linux-can and fixed by commit 969439016d2c (\u0022can: add missing initialisations in CAN related skbuffs\u0022). packet_rcv_spkt() itself has never been hardened: only packet_rcv() and tpacket_rcv() gained dev_has_header() checks in commit d549699048b4 (\u0022net/packet: fix packet receive on L3 devices without visible hard header\u0022).",
  "published": "2026-10-23T13:17:30Z",
  "severity": "",
  "epss": 0.00156,
  "epssPercentile": 0.04754,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.11-1",
      "fix": "DEBIAN-CVE-2026-99066",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99066",
      "released": "2026-10-24T13:25:57Z"
    }
  ],
  "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"
  }
}