{
  "threat_severity" : "Low",
  "public_date" : "2025-12-30T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: bpf: Prevent decl_tag from being referenced in func_proto arg",
    "id" : "2426204",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2426204"
  },
  "cvss3" : {
    "cvss3_base_score" : "3.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
    "status" : "verified"
  },
  "cwe" : "CWE-1287",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nbpf: Prevent decl_tag from being referenced in func_proto arg\nSyzkaller managed to hit another decl_tag issue:\nbtf_func_proto_check kernel/bpf/btf.c:4506 [inline]\nbtf_check_all_types kernel/bpf/btf.c:4734 [inline]\nbtf_parse_type_sec+0x1175/0x1980 kernel/bpf/btf.c:4763\nbtf_parse kernel/bpf/btf.c:5042 [inline]\nbtf_new_fd+0x65a/0xb00 kernel/bpf/btf.c:6709\nbpf_btf_load+0x6f/0x90 kernel/bpf/syscall.c:4342\n__sys_bpf+0x50a/0x6c0 kernel/bpf/syscall.c:5034\n__do_sys_bpf kernel/bpf/syscall.c:5093 [inline]\n__se_sys_bpf kernel/bpf/syscall.c:5091 [inline]\n__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5091\ndo_syscall_64+0x54/0x70 arch/x86/entry/common.c:48\nThis seems similar to commit ea68376c8bed (\"bpf: prevent decl_tag from being\nreferenced in func_proto\") but for the argument.", "A flaw was found in the BPF Type Format (BTF) validation. A crafted BTF blob can reference a decl_tag type from a func_proto argument, bypassing intended validation and potentially causing issues during BPF program verification." ],
  "statement" : "Exploiting this requires the ability to load BPF programs, which needs CAP_BPF or CAP_SYS_ADMIN. The impact is limited to causing BTF parsing issues rather than direct code execution.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6583",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-362.8.1.el9_3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6583",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-362.8.1.el9_3"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2022-50883\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50883\nhttps://lore.kernel.org/linux-cve-announce/2025123025-CVE-2022-50883-09fa@gregkh/T" ],
  "name" : "CVE-2022-50883",
  "csaw" : false
}