{
  "threat_severity" : "Moderate",
  "public_date" : "2025-09-18T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: net: add vlan_get_protocol_and_depth() helper",
    "id" : "2396528",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2396528"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-125",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nnet: add vlan_get_protocol_and_depth() helper\nBefore blamed commit, pskb_may_pull() was used instead\nof skb_header_pointer() in __vlan_get_protocol() and friends.\nFew callers depended on skb->head being populated with MAC header,\nsyzbot caught one of them (skb_mac_gso_segment())\nAdd vlan_get_protocol_and_depth() to make the intent clearer\nand use it where sensible.\nThis is a more generic fix than commit e9d3f80935b6\n(\"net/af_packet: make sure to pull mac header\") which was\ndealing with a similar issue.\nkernel BUG at include/linux/skbuff.h:2655 !\ninvalid opcode: 0000 [#1] SMP KASAN\nCPU: 0 PID: 1441 Comm: syz-executor199 Not tainted 6.1.24-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023\nRIP: 0010:__skb_pull include/linux/skbuff.h:2655 [inline]\nRIP: 0010:skb_mac_gso_segment+0x68f/0x6a0 net/core/gro.c:136\nCode: fd 48 8b 5c 24 10 44 89 6b 70 48 c7 c7 c0 ae 0d 86 44 89 e6 e8 a1 91 d0 00 48 c7 c7 00 af 0d 86 48 89 de 31 d2 e8 d1 4a e9 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41\nRSP: 0018:ffffc90001bd7520 EFLAGS: 00010286\nRAX: ffffffff8469736a RBX: ffff88810f31dac0 RCX: ffff888115a18b00\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\nRBP: ffffc90001bd75e8 R08: ffffffff84697183 R09: fffff5200037adf9\nR10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000012\nR13: 000000000000fee5 R14: 0000000000005865 R15: 000000000000fed7\nFS: 000055555633f300(0000) GS:ffff8881f6a00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000020000000 CR3: 0000000116fea000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n<TASK>\n[<ffffffff847018dd>] __skb_gso_segment+0x32d/0x4c0 net/core/dev.c:3419\n[<ffffffff8470398a>] skb_gso_segment include/linux/netdevice.h:4819 [inline]\n[<ffffffff8470398a>] validate_xmit_skb+0x3aa/0xee0 net/core/dev.c:3725\n[<ffffffff84707042>] __dev_queue_xmit+0x1332/0x3300 net/core/dev.c:4313\n[<ffffffff851a9ec7>] dev_queue_xmit+0x17/0x20 include/linux/netdevice.h:3029\n[<ffffffff851b4a82>] packet_snd net/packet/af_packet.c:3111 [inline]\n[<ffffffff851b4a82>] packet_sendmsg+0x49d2/0x6470 net/packet/af_packet.c:3142\n[<ffffffff84669a12>] sock_sendmsg_nosec net/socket.c:716 [inline]\n[<ffffffff84669a12>] sock_sendmsg net/socket.c:736 [inline]\n[<ffffffff84669a12>] __sys_sendto+0x472/0x5f0 net/socket.c:2139\n[<ffffffff84669c75>] __do_sys_sendto net/socket.c:2151 [inline]\n[<ffffffff84669c75>] __se_sys_sendto net/socket.c:2147 [inline]\n[<ffffffff84669c75>] __x64_sys_sendto+0xe5/0x100 net/socket.c:2147\n[<ffffffff8551d40f>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n[<ffffffff8551d40f>] do_syscall_64+0x2f/0x50 arch/x86/entry/common.c:80\n[<ffffffff85600087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd" ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6583",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-362.8.1.el9_3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6583",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-362.8.1.el9_3"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2023-53433\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53433\nhttps://lore.kernel.org/linux-cve-announce/2025091857-CVE-2023-53433-fc43@gregkh/T" ],
  "name" : "CVE-2023-53433",
  "csaw" : false
}