{
  "cveId": "CVE-2022-48651",
  "url": "https://patchblox.com/security/cve/CVE-2022-48651",
  "summary": "CVE-2022-48651 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48651, released April 28, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ipvlan: Fix out-of-bound bugs caused by unset sk...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ipvlan: Fix out-of-bound bugs caused by unset skb-\u003Emac_header  If an AF_PACKET socket is used to send packets through ipvlan and the default xmit function of the AF_PACKET socket is changed from dev_queue_xmit() to packet_direct_xmit() via setsockopt() with the option name of PACKET_QDISC_BYPASS, the skb-\u003Emac_header may not be reset and remains as the initial value of 65535, this may trigger slab-out-of-bounds bugs as following:  ================================================================= UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2\u002B0xdb/0x330 [ipvlan] PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4\u002B #6 ardware name: QEMU Standard PC (i440FX \u002B PIIX, 1996), BIOS 1.14.0-1.fc33 all Trace: print_address_description.constprop.0\u002B0x1d/0x160 print_report.cold\u002B0x4f/0x112 kasan_report\u002B0xa3/0x130 ipvlan_xmit_mode_l2\u002B0xdb/0x330 [ipvlan] ipvlan_start_xmit\u002B0x29/0xa0 [ipvlan] __dev_direct_xmit\u002B0x2e2/0x380 packet_direct_xmit\u002B0x22/0x60 packet_snd\u002B0x7c9/0xc40 sock_sendmsg\u002B0x9a/0xa0 __sys_sendto\u002B0x18a/0x230 __x64_sys_sendto\u002B0x74/0x90 do_syscall_64\u002B0x3b/0x90 entry_SYSCALL_64_after_hwframe\u002B0x63/0xcd  The root cause is:   1. packet_snd() only reset skb-\u003Emac_header when sock-\u003Etype is SOCK_RAW      and skb-\u003Eprotocol is not specified as in packet_parse_headers()    2. packet_direct_xmit() doesn\u0027t reset skb-\u003Emac_header as dev_queue_xmit()  In this case, skb-\u003Emac_header is 65535 when ipvlan_xmit_mode_l2() is called. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() which use \u0022skb-\u003Ehead \u002B skb-\u003Emac_header\u0022, out-of-bound access occurs.  This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2() and reset mac header in multicast to solve this out-of-bound bug.",
  "published": "2024-04-28T13:15:07Z",
  "severity": "high",
  "cvss": 7.7,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
  "epss": 0.00251,
  "epssPercentile": 0.16706,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.0.2-1",
      "fix": "DEBIAN-CVE-2022-48651",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48651",
      "released": "2024-04-28T13:15:07Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.0.2-1",
      "fix": "DEBIAN-CVE-2022-48651",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48651",
      "released": "2024-04-28T13:15:07Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.0.2-1",
      "fix": "DEBIAN-CVE-2022-48651",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48651",
      "released": "2024-04-28T13:15:07Z"
    }
  ],
  "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"
  }
}