{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-53312",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-53312"
  ],
  "published": "2025-09-16T16:13:45Z",
  "summary": "net: fix net_dev_start_xmit trace event vs skb_transport_offset()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix net_dev_start_xmit trace event vs skb_transport_offset()\n\nAfter blamed commit, we must be more careful about using\nskb_transport_offset(), as reminded us by syzbot:\n\nWARNING: CPU: 0 PID: 10 at include/linux/skbuff.h:2868 skb_transport_offset include/linux/skbuff.h:2977 [inline]\nWARNING: CPU: 0 PID: 10 at include/linux/skbuff.h:2868 perf_trace_net_dev_start_xmit+0x89a/0xce0 include/trace/events/net.h:14\nModules linked in:\nCPU: 0 PID: 10 Comm: kworker/u4:1 Not tainted 6.1.30-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023\nWorkqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet\nRIP: 0010:skb_transport_header include/linux/skbuff.h:2868 [inline]\nRIP: 0010:skb_transport_offset include/linux/skbuff.h:2977 [inline]\nRIP: 0010:perf_trace_net_dev_start_xmit+0x89a/0xce0 include/trace/events/net.h:14\nCode: 8b 04 25 28 00 00 00 48 3b 84 24 c0 00 00 00 0f 85 4e 04 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc e8 56 22 01 fd <0f> 0b e9 f6 fc ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 86 f9 ff\nRSP: 0018:ffffc900002bf700 EFLAGS: 00010293\nRAX: ffffffff8485d8ca RBX: 000000000000ffff RCX: ffff888100914280\nRDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff\nRBP: ffffc900002bf818 R08: ffffffff8485d5b6 R09: fffffbfff0f8fb5e\nR10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff110217d8f67\nR13: ffff88810bec7b3a R14: dffffc0000000000 R15: dffffc0000000000\nFS: 0000000000000000(0000) GS:ffff8881f6a00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f96cf6d52f0 CR3: 000000012224c000 CR4: 0000000000350ef0\nCall Trace:\n<TASK>\n[<ffffffff84715e35>] trace_net_dev_start_xmit include/trace/events/net.h:14 [inline]\n[<ffffffff84715e35>] xmit_one net/core/dev.c:3643 [inline]\n[<ffffffff84715e35>] dev_hard_start_xmit+0x705/0x980 net/core/dev.c:3660\n[<ffffffff8471a232>] __dev_queue_xmit+0x16b2/0x3370 net/core/dev.c:4324\n[<ffffffff85416493>] dev_queue_xmit include/linux/netdevice.h:3030 [inline]\n[<ffffffff85416493>] batadv_send_skb_packet+0x3f3/0x680 net/batman-adv/send.c:108\n[<ffffffff85416744>] batadv_send_broadcast_skb+0x24/0x30 net/batman-adv/send.c:127\n[<ffffffff853bc52a>] batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:393 [inline]\n[<ffffffff853bc52a>] batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:421 [inline]\n[<ffffffff853bc52a>] batadv_iv_send_outstanding_bat_ogm_packet+0x69a/0x840 net/batman-adv/bat_iv_ogm.c:1701\n[<ffffffff8151023c>] process_one_work+0x8ac/0x1170 kernel/workqueue.c:2289\n[<ffffffff81511938>] worker_thread+0xaa8/0x12d0 kernel/workqueue.c:2436",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.21-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v6",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7l",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v8",
            "binary_version": "1:6.1.21-1+rpt1"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.21-1+rpt1": {
            "linux_commit": "0afb5e98488aed7017b9bf321b575d0177feb7ed",
            "upstream_version": "6.1.21",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.39"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-53312"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ced61418f46993d571385812bafed3a7d4ab6918"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/58f9e88eb247263c74383b4ee8858abac15cdbe0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f88fcb1d7d961b4b402d675109726f94db87571c"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}