sctp: add mutual exclusion in proc_sctp_do_udp_port()

{
  "id": "cb1c239a7b705a9cdc1d028d2639319637915a93169ab7e360173b2def2379a9",
  "url": "https://osv.dev/vulnerability/CVE-2025-22062",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "sctp: add mutual exclusion in proc_sctp_do_udp_port()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: sctp: add mutual exclusion in proc_sctp_do_udp_port() We must serialize calls to sctp_udp_sock_stop() and sctp_udp_sock_start() or risk a crash as syzbot reported: Oops: general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] CPU: 1 UID: 0 PID: 6551 Comm: syz.1.44 Not tainted 6.14.0-syzkaller-g7f2ff7b62617 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:kernel_sock_shutdown+0x47/0x70 net/socket.c:3653 Call Trace: udp_tunnel_sock_release+0x68/0x80 net/ipv4/udp_tunnel_core.c:181 sctp_udp_sock_stop+0x71/0x160 net/sctp/protocol.c:930 proc_sctp_do_udp_port+0x264/0x450 net/sctp/sysctl.c:553 proc_sys_call_handler+0x3d0/0x5b0 fs/proc/proc_sysctl.c:601 iter_file_splice_write+0x91c/0x1150 fs/splice.c:738 do_splice_from fs/splice.c:935 [inline] direct_splice_actor+0x18f/0x6c0 fs/splice.c:1158 splice_direct_to_actor+0x342/0xa30 fs/splice.c:1102 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x174/0x240 fs/splice.c:1227 do_sendfile+0xafd/0xe50 fs/read_write.c:1368 __do_sys_sendfile64 fs/read_write.c:1429 [inline] __se_sys_sendfile64 fs/read_write.c:1415 [inline] __x64_sys_sendfile64+0x1d8/0x220 fs/read_write.c:1415 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]",
    "evidence": "osv:CVE-2025-22062",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.184",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.140",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.92",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.23",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.13.11",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.14.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-22062",
      "aliases": [
        "CVE-2025-22062"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                {
                  "fixed": "65ccb2793da7401772a3ffe85355c831b313c59f"
                },
                {
                  "fixed": "386507cb6fb7cdef598ddcb3f0fa37e6ca9e789d"
                },
                {
                  "fixed": "b3598f53211ba1025485306de2733bdd241311a3"
                },
                {
                  "fixed": "e5178bfc55b3a78000f0f8298e7ade88783ce581"
                },
                {
                  "fixed": "efb8cb487be8f4ba6aaef616011d702d6a083ed1"
                },
                {
                  "fixed": "d3d7675d77622f6ca1aae14c51f80027b36283f8"
                },
                {
                  "fixed": "10206302af856791fbcc27a33ed3c3eb09b2793d"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22062.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.184"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.140"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.92"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.23"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.13.11"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.14.0"
                },
                {
                  "fixed": "6.14.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22062.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.215957916Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/10206302af856791fbcc27a33ed3c3eb09b2793d",
        "https://git.kernel.org/stable/c/386507cb6fb7cdef598ddcb3f0fa37e6ca9e789d",
        "https://git.kernel.org/stable/c/65ccb2793da7401772a3ffe85355c831b313c59f",
        "https://git.kernel.org/stable/c/b3598f53211ba1025485306de2733bdd241311a3",
        "https://git.kernel.org/stable/c/d3d7675d77622f6ca1aae14c51f80027b36283f8",
        "https://git.kernel.org/stable/c/e5178bfc55b3a78000f0f8298e7ade88783ce581",
        "https://git.kernel.org/stable/c/efb8cb487be8f4ba6aaef616011d702d6a083ed1",
        "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22062.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-22062",
        "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/2025/22xxx/CVE-2025-22062.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-22062",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 519603,
  "published_at": "2025-04-16T14:12:17.605+00:00"
}