bpf: Prevent decl_tag from being referenced in func_proto arg

{
  "id": "b4291453cf3dd306c35b1078faff4bdb9d5c1db6065b28550abf44ea56ad6966",
  "url": "https://osv.dev/vulnerability/CVE-2022-50883",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "bpf: Prevent decl_tag from being referenced in func_proto arg",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: bpf: Prevent decl_tag from being referenced in func_proto arg Syzkaller managed to hit another decl_tag issue: btf_func_proto_check kernel/bpf/btf.c:4506 [inline] btf_check_all_types kernel/bpf/btf.c:4734 [inline] btf_parse_type_sec+0x1175/0x1980 kernel/bpf/btf.c:4763 btf_parse kernel/bpf/btf.c:5042 [inline] btf_new_fd+0x65a/0xb00 kernel/bpf/btf.c:6709 bpf_btf_load+0x6f/0x90 kernel/bpf/syscall.c:4342 __sys_bpf+0x50a/0x6c0 kernel/bpf/syscall.c:5034 __do_sys_bpf kernel/bpf/syscall.c:5093 [inline] __se_sys_bpf kernel/bpf/syscall.c:5091 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5091 do_syscall_64+0x54/0x70 arch/x86/entry/common.c:48 This seems similar to commit ea68376c8bed (\"bpf: prevent decl_tag from being referenced in func_proto\") but for the argument.",
    "evidence": "osv:CVE-2022-50883",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.0.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-50883",
      "aliases": [
        "CVE-2022-50883"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef"
                },
                {
                  "fixed": "3f3d54962a032581996edda8e6bcbf7a30371234"
                },
                {
                  "fixed": "e6d276dcc9204f95632580c43d66c52ca502d7ec"
                },
                {
                  "fixed": "f17472d4599697d701aa239b4c475a506bccfd19"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50883.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.0.16"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.1.0"
                },
                {
                  "fixed": "6.1.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50883.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:34.876675482Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3f3d54962a032581996edda8e6bcbf7a30371234",
        "https://git.kernel.org/stable/c/e6d276dcc9204f95632580c43d66c52ca502d7ec",
        "https://git.kernel.org/stable/c/f17472d4599697d701aa239b4c475a506bccfd19",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50883.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50883",
        "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/2022/50xxx/CVE-2022-50883.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-50883",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 502146,
  "published_at": "2025-12-30T12:23:21.675+00:00"
}