netfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()

{
  "id": "526d81d7e6eaf484e4be76d08457c4631c4e50d8f05311f73283e561d7fd338c",
  "url": "https://osv.dev/vulnerability/CVE-2024-47685",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "netfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put() syzbot reported that nf_reject_ip6_tcphdr_put() was possibly sending garbage on the four reserved tcp bits (th->res1) Use skb_put_zero() to clear the whole TCP header, as done in nf_reject_ip_tcphdr_put() BUG: KMSAN: uninit-value in nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255 nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255 nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344 nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48 expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline] nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288 nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:269 [inline] NF_HOOK include/linux/netfilter.h:312 [inline] ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310 __netif_receive_skb_one_core net/core/dev.c:5661 [inline] __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5775 process_backlog+0x4ad/0xa50 net/core/dev.c:6108 __napi_poll+0xe7/0x980 net/core/dev.c:6772 napi_poll net/core/dev.c:6841 [inline] net_rx_action+0xa5a/0x19b0 net/core/dev.c:6963 handle_softirqs+0x1ce/0x800 kernel/softirq.c:554 __do_softirq+0x14/0x1a kernel/softirq.c:588 do_softirq+0x9a/0x100 kernel/so",
    "evidence": "osv:CVE-2024-47685",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.19.323",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.4.285",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.227",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.168",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.113",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.54",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.10.13",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.11.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-47685",
      "aliases": [
        "CVE-2024-47685"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c8d7b98bec43faaa6583c3135030be5eb4693acb"
                },
                {
                  "fixed": "872eca64c3267dbc5836b715716fc6c03a18eda7"
                },
                {
                  "fixed": "7bcbc4cda777d26c88500d973fad0d497fc8a82e"
                },
                {
                  "fixed": "dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5"
                },
                {
                  "fixed": "fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd"
                },
                {
                  "fixed": "7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2"
                },
                {
                  "fixed": "af4b8a704f26f38310655bad67fd8096293275a2"
                },
                {
                  "fixed": "7a7b5a27c53b55e91eecf646d1b204e73fa4af93"
                },
                {
                  "fixed": "10210658f827ad45061581cbfc05924b723e8922"
                },
                {
                  "fixed": "9c778fe48d20ef362047e3376dee56d77f8500d4"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-47685.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "3.18.0"
                },
                {
                  "fixed": "4.19.323"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.20.0"
                },
                {
                  "fixed": "5.4.285"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.5.0"
                },
                {
                  "fixed": "5.10.227"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.168"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.113"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.54"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.10.13"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.11.0"
                },
                {
                  "fixed": "6.11.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-47685.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.418752171Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-265688.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-355557.html",
        "https://git.kernel.org/stable/c/10210658f827ad45061581cbfc05924b723e8922",
        "https://git.kernel.org/stable/c/7a7b5a27c53b55e91eecf646d1b204e73fa4af93",
        "https://git.kernel.org/stable/c/7bcbc4cda777d26c88500d973fad0d497fc8a82e",
        "https://git.kernel.org/stable/c/7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2",
        "https://git.kernel.org/stable/c/872eca64c3267dbc5836b715716fc6c03a18eda7",
        "https://git.kernel.org/stable/c/9c778fe48d20ef362047e3376dee56d77f8500d4",
        "https://git.kernel.org/stable/c/af4b8a704f26f38310655bad67fd8096293275a2",
        "https://git.kernel.org/stable/c/dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5",
        "https://git.kernel.org/stable/c/fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/47xxx/CVE-2024-47685.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-47685",
        "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/2024/47xxx/CVE-2024-47685.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-47685",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 517723,
  "published_at": "2024-10-21T11:53:26.486+00:00"
}