Vulnerability-Lookup

FKIE_CVE-2022-50883

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2026-06-17 05:24

Severity

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.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3f3d54962a032581996edda8e6bcbf7a30371234
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e6d276dcc9204f95632580c43d66c52ca502d7ec
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f17472d4599697d701aa239b4c475a506bccfd19

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/btf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3f3d54962a032581996edda8e6bcbf7a30371234",
              "status": "affected",
              "version": "b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef",
              "versionType": "git"
            },
            {
              "lessThan": "e6d276dcc9204f95632580c43d66c52ca502d7ec",
              "status": "affected",
              "version": "b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef",
              "versionType": "git"
            },
            {
              "lessThan": "f17472d4599697d701aa239b4c475a506bccfd19",
              "status": "affected",
              "version": "b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/btf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "lessThan": "5.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "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."
    }
  ],
  "id": "CVE-2022-50883",
  "lastModified": "2026-06-17T05:24:20.957",
  "metrics": {},
  "published": "2025-12-30T13:16:03.387",
  "references": [
    {
      "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/e6d276dcc9204f95632580c43d66c52ca502d7ec"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f17472d4599697d701aa239b4c475a506bccfd19"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}

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

Vulnerability from cvelistv5 – Published: 2025-12-30 12:23 – Updated: 2026-05-11 19:26

Title

bpf: Prevent decl_tag from being referenced in func_proto arg

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/3f3d54962a0325819…
https://git.kernel.org/stable/c/e6d276dcc9204f956…
https://git.kernel.org/stable/c/f17472d4599697d70…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef , < 3f3d54962a032581996edda8e6bcbf7a30371234 (git) Affected: b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef , < e6d276dcc9204f95632580c43d66c52ca502d7ec (git) Affected: b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef , < f17472d4599697d701aa239b4c475a506bccfd19 (git)
Linux	Linux	Affected: 5.16 Unaffected: 0 , < 5.16 (semver) Unaffected: 6.0.16 , ≤ 6.0.* (semver) Unaffected: 6.1.2 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/btf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3f3d54962a032581996edda8e6bcbf7a30371234",
              "status": "affected",
              "version": "b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef",
              "versionType": "git"
            },
            {
              "lessThan": "e6d276dcc9204f95632580c43d66c52ca502d7ec",
              "status": "affected",
              "version": "b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef",
              "versionType": "git"
            },
            {
              "lessThan": "f17472d4599697d701aa239b4c475a506bccfd19",
              "status": "affected",
              "version": "b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/btf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "lessThan": "5.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.16",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.2",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:26:58.510Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3f3d54962a032581996edda8e6bcbf7a30371234"
        },
        {
          "url": "https://git.kernel.org/stable/c/e6d276dcc9204f95632580c43d66c52ca502d7ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/f17472d4599697d701aa239b4c475a506bccfd19"
        }
      ],
      "title": "bpf: Prevent decl_tag from being referenced in func_proto arg",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50883",
    "datePublished": "2025-12-30T12:23:21.675Z",
    "dateReserved": "2025-12-30T12:06:07.138Z",
    "dateUpdated": "2026-05-11T19:26:58.510Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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