FKIE_CVE-2023-53433

Vulnerability from fkie_nvd - Published: 2025-09-18 16:15 - Updated: 2025-12-12 21:26
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net: add vlan_get_protocol_and_depth() helper Before blamed commit, pskb_may_pull() was used instead of skb_header_pointer() in __vlan_get_protocol() and friends. Few callers depended on skb->head being populated with MAC header, syzbot caught one of them (skb_mac_gso_segment()) Add vlan_get_protocol_and_depth() to make the intent clearer and use it where sensible. This is a more generic fix than commit e9d3f80935b6 ("net/af_packet: make sure to pull mac header") which was dealing with a similar issue. kernel BUG at include/linux/skbuff.h:2655 ! invalid opcode: 0000 [#1] SMP KASAN CPU: 0 PID: 1441 Comm: syz-executor199 Not tainted 6.1.24-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:__skb_pull include/linux/skbuff.h:2655 [inline] RIP: 0010:skb_mac_gso_segment+0x68f/0x6a0 net/core/gro.c:136 Code: 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 RSP: 0018:ffffc90001bd7520 EFLAGS: 00010286 RAX: ffffffff8469736a RBX: ffff88810f31dac0 RCX: ffff888115a18b00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90001bd75e8 R08: ffffffff84697183 R09: fffff5200037adf9 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000012 R13: 000000000000fee5 R14: 0000000000005865 R15: 000000000000fed7 FS: 000055555633f300(0000) GS:ffff8881f6a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000116fea000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> [<ffffffff847018dd>] __skb_gso_segment+0x32d/0x4c0 net/core/dev.c:3419 [<ffffffff8470398a>] skb_gso_segment include/linux/netdevice.h:4819 [inline] [<ffffffff8470398a>] validate_xmit_skb+0x3aa/0xee0 net/core/dev.c:3725 [<ffffffff84707042>] __dev_queue_xmit+0x1332/0x3300 net/core/dev.c:4313 [<ffffffff851a9ec7>] dev_queue_xmit+0x17/0x20 include/linux/netdevice.h:3029 [<ffffffff851b4a82>] packet_snd net/packet/af_packet.c:3111 [inline] [<ffffffff851b4a82>] packet_sendmsg+0x49d2/0x6470 net/packet/af_packet.c:3142 [<ffffffff84669a12>] sock_sendmsg_nosec net/socket.c:716 [inline] [<ffffffff84669a12>] sock_sendmsg net/socket.c:736 [inline] [<ffffffff84669a12>] __sys_sendto+0x472/0x5f0 net/socket.c:2139 [<ffffffff84669c75>] __do_sys_sendto net/socket.c:2151 [inline] [<ffffffff84669c75>] __se_sys_sendto net/socket.c:2147 [inline] [<ffffffff84669c75>] __x64_sys_sendto+0xe5/0x100 net/socket.c:2147 [<ffffffff8551d40f>] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<ffffffff8551d40f>] do_syscall_64+0x2f/0x50 arch/x86/entry/common.c:80 [<ffffffff85600087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/15eaeb8941f12fcc2713c4bf6eb8f76a37854b4dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/34a5ee69ec6273f0aee79e7ce4d14afc83ca8122Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4063384ef762cc5946fc7a3f89879e76c6ec51e2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4188c5269475ac59d467b5814c5df02756f6d907Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/55caf900e13cd04466def08173a14b41d18c19c3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9dd9ffe118415b4ac1cebac43443000072bc8f46Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.8
linux linux_kernel 5.8
linux linux_kernel 5.8
linux linux_kernel 5.8
linux linux_kernel 6.4
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: add vlan_get_protocol_and_depth() helper\n\nBefore blamed commit, pskb_may_pull() was used instead\nof skb_header_pointer() in __vlan_get_protocol() and friends.\n\nFew callers depended on skb-\u003ehead being populated with MAC header,\nsyzbot caught one of them (skb_mac_gso_segment())\n\nAdd vlan_get_protocol_and_depth() to make the intent clearer\nand use it where sensible.\n\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.\n\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 \u003c0f\u003e 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\u003cTASK\u003e\n[\u003cffffffff847018dd\u003e] __skb_gso_segment+0x32d/0x4c0 net/core/dev.c:3419\n[\u003cffffffff8470398a\u003e] skb_gso_segment include/linux/netdevice.h:4819 [inline]\n[\u003cffffffff8470398a\u003e] validate_xmit_skb+0x3aa/0xee0 net/core/dev.c:3725\n[\u003cffffffff84707042\u003e] __dev_queue_xmit+0x1332/0x3300 net/core/dev.c:4313\n[\u003cffffffff851a9ec7\u003e] dev_queue_xmit+0x17/0x20 include/linux/netdevice.h:3029\n[\u003cffffffff851b4a82\u003e] packet_snd net/packet/af_packet.c:3111 [inline]\n[\u003cffffffff851b4a82\u003e] packet_sendmsg+0x49d2/0x6470 net/packet/af_packet.c:3142\n[\u003cffffffff84669a12\u003e] sock_sendmsg_nosec net/socket.c:716 [inline]\n[\u003cffffffff84669a12\u003e] sock_sendmsg net/socket.c:736 [inline]\n[\u003cffffffff84669a12\u003e] __sys_sendto+0x472/0x5f0 net/socket.c:2139\n[\u003cffffffff84669c75\u003e] __do_sys_sendto net/socket.c:2151 [inline]\n[\u003cffffffff84669c75\u003e] __se_sys_sendto net/socket.c:2147 [inline]\n[\u003cffffffff84669c75\u003e] __x64_sys_sendto+0xe5/0x100 net/socket.c:2147\n[\u003cffffffff8551d40f\u003e] do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n[\u003cffffffff8551d40f\u003e] do_syscall_64+0x2f/0x50 arch/x86/entry/common.c:80\n[\u003cffffffff85600087\u003e] entry_SYSCALL_64_after_hwframe+0x63/0xcd"
    }
  ],
  "id": "CVE-2023-53433",
  "lastModified": "2025-12-12T21:26:42.650",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-09-18T16:15:47.343",
  "references": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
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      "tags": [
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      "url": "https://git.kernel.org/stable/c/55caf900e13cd04466def08173a14b41d18c19c3"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.