bonding: do not assume skb mac_header is set

{
  "id": "ae9c531c5bd2b9242d325602bc0be8867338c4432f256e2520602681f474a05b",
  "url": "https://osv.dev/vulnerability/CVE-2023-53601",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "bonding: do not assume skb mac_header is set",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: bonding: do not assume skb mac_header is set Drivers must not assume in their ndo_start_xmit() that skbs have their mac_header set. skb->data is all what is needed. bonding seems to be one of the last offender as caught by syzbot: WARNING: CPU: 1 PID: 12155 at include/linux/skbuff.h:2907 skb_mac_offset include/linux/skbuff.h:2913 [inline] WARNING: CPU: 1 PID: 12155 at include/linux/skbuff.h:2907 bond_xmit_hash drivers/net/bonding/bond_main.c:4170 [inline] WARNING: CPU: 1 PID: 12155 at include/linux/skbuff.h:2907 bond_xmit_3ad_xor_slave_get drivers/net/bonding/bond_main.c:5149 [inline] WARNING: CPU: 1 PID: 12155 at include/linux/skbuff.h:2907 bond_3ad_xor_xmit drivers/net/bonding/bond_main.c:5186 [inline] WARNING: CPU: 1 PID: 12155 at include/linux/skbuff.h:2907 __bond_start_xmit drivers/net/bonding/bond_main.c:5442 [inline] WARNING: CPU: 1 PID: 12155 at include/linux/skbuff.h:2907 bond_start_xmit+0x14ab/0x19d0 drivers/net/bonding/bond_main.c:5470 Modules linked in: CPU: 1 PID: 12155 Comm: syz-executor.3 Not tainted 6.1.30-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:skb_mac_header include/linux/skbuff.h:2907 [inline] RIP: 0010:skb_mac_offset include/linux/skbuff.h:2913 [inline] RIP: 0010:bond_xmit_hash drivers/net/bonding/bond_main.c:4170 [inline] RIP: 0010:bond_xmit_3ad_xor_slave_get drivers/net/bonding/bond_main.c:5149 [inline] RIP: 0010:bo",
    "evidence": "osv:CVE-2023-53601",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.121",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.39",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.3.13",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.4.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-53601",
      "aliases": [
        "CVE-2023-53601"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7b8fc0103bb51d1d3e1fb5fd67958612e709f883"
                },
                {
                  "fixed": "029d892b05fc5e42a1b1c0665f62cb3e4b23e6dc"
                },
                {
                  "fixed": "37b6143376a578265add04f35161b257eeb84a5e"
                },
                {
                  "fixed": "c96cc3d9acaca53d9a81c884c23f1224b61c829b"
                },
                {
                  "fixed": "bc16fc63592c419357dd4c4d82d50762102a60ef"
                },
                {
                  "fixed": "6a940abdef3162e5723f1495b8a49859d1708f79"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53601.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.12.0"
                },
                {
                  "fixed": "5.15.121"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.39"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.3.13"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.4.0"
                },
                {
                  "fixed": "6.4.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53601.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.815973957Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/029d892b05fc5e42a1b1c0665f62cb3e4b23e6dc",
        "https://git.kernel.org/stable/c/37b6143376a578265add04f35161b257eeb84a5e",
        "https://git.kernel.org/stable/c/6a940abdef3162e5723f1495b8a49859d1708f79",
        "https://git.kernel.org/stable/c/bc16fc63592c419357dd4c4d82d50762102a60ef",
        "https://git.kernel.org/stable/c/c96cc3d9acaca53d9a81c884c23f1224b61c829b",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53601.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53601",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53601.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53601",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518202,
  "published_at": "2025-10-04T15:44:12.477+00:00"
}