bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE

{
  "id": "9fa45338fef9866730510ff1b119417b7d3c55cdb69a8b85a2306430c69fa924",
  "url": "https://osv.dev/vulnerability/CVE-2022-49875",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE When using bpftool to pin {PROG, MAP, LINK} without FILE, segmentation fault will occur. The reson is that the lack of FILE will cause strlen to trigger NULL pointer dereference. The corresponding stacktrace is shown below: do_pin do_pin_any do_pin_fd mount_bpffs_for_pin strlen(name) <- NULL pointer dereference Fix it by adding validation to the common process.",
    "evidence": "osv:CVE-2022-49875",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.155",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.79",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-49875",
      "aliases": [
        "CVE-2022-49875"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "75a1e792c335b5c6d7fdb1014da47aeb64c5944f"
                },
                {
                  "fixed": "8c80b2fca4112d724dde477aed13f7b0510a2792"
                },
                {
                  "fixed": "6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a"
                },
                {
                  "fixed": "da5161ba94c5e9182c301dd4f09c94f715c068bd"
                },
                {
                  "fixed": "34de8e6e0e1f66e431abf4123934a2581cb5f133"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49875.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.7.0"
                },
                {
                  "fixed": "5.10.155"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.79"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.0.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49875.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:28.548089622Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/34de8e6e0e1f66e431abf4123934a2581cb5f133",
        "https://git.kernel.org/stable/c/6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a",
        "https://git.kernel.org/stable/c/8c80b2fca4112d724dde477aed13f7b0510a2792",
        "https://git.kernel.org/stable/c/da5161ba94c5e9182c301dd4f09c94f715c068bd",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49875.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49875",
        "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/2022/49xxx/CVE-2022-49875.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49875",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 495030,
  "published_at": "2025-05-01T14:10:24.427+00:00"
}