CVE-2022-50883 (GCVE-0-2022-50883)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:23 – Updated: 2025-12-30 12:23
VLAI?
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 89357aa97b521fca76e39d81e2b1ac5edb3d0b96 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 329a76635548ee8fceb3b78c7d54d96524e80925 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b327c68ace71ba9cb3105ae6a5955a229e9bdca3 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3f3d54962a032581996edda8e6bcbf7a30371234 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e6d276dcc9204f95632580c43d66c52ca502d7ec (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f17472d4599697d701aa239b4c475a506bccfd19 (git)
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    Linux Linux Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Prevent decl_tag from being referenced in func_proto arg\n\nSyzkaller managed to hit another decl_tag issue:\n\n  btf_func_proto_check kernel/bpf/btf.c:4506 [inline]\n  btf_check_all_types kernel/bpf/btf.c:4734 [inline]\n  btf_parse_type_sec+0x1175/0x1980 kernel/bpf/btf.c:4763\n  btf_parse kernel/bpf/btf.c:5042 [inline]\n  btf_new_fd+0x65a/0xb00 kernel/bpf/btf.c:6709\n  bpf_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\n  do_syscall_64+0x54/0x70 arch/x86/entry/common.c:48\n\nThis seems similar to commit ea68376c8bed (\"bpf: prevent decl_tag from being\nreferenced in func_proto\") but for the argument."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:23:21.675Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "url": "https://git.kernel.org/stable/c/f17472d4599697d701aa239b4c475a506bccfd19"
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    "cveId": "CVE-2022-50883",
    "datePublished": "2025-12-30T12:23:21.675Z",
    "dateReserved": "2025-12-30T12:06:07.138Z",
    "dateUpdated": "2025-12-30T12:23:21.675Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50883\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:03.387\",\"lastModified\":\"2025-12-30T13:16:03.387\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf: Prevent decl_tag from being referenced in func_proto arg\\n\\nSyzkaller managed to hit another decl_tag issue:\\n\\n  btf_func_proto_check kernel/bpf/btf.c:4506 [inline]\\n  btf_check_all_types kernel/bpf/btf.c:4734 [inline]\\n  btf_parse_type_sec+0x1175/0x1980 kernel/bpf/btf.c:4763\\n  btf_parse kernel/bpf/btf.c:5042 [inline]\\n  btf_new_fd+0x65a/0xb00 kernel/bpf/btf.c:6709\\n  bpf_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\\n  do_syscall_64+0x54/0x70 arch/x86/entry/common.c:48\\n\\nThis seems similar to commit ea68376c8bed (\\\"bpf: prevent decl_tag from being\\nreferenced in func_proto\\\") but for the argument.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/329a76635548ee8fceb3b78c7d54d96524e80925\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3f3d54962a032581996edda8e6bcbf7a30371234\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/89357aa97b521fca76e39d81e2b1ac5edb3d0b96\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b327c68ace71ba9cb3105ae6a5955a229e9bdca3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e6d276dcc9204f95632580c43d66c52ca502d7ec\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f17472d4599697d701aa239b4c475a506bccfd19\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.