{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0c991ebc8c69d29b7fc44db17075c5aa5253e2ab"
            },
            {
              "fixed": "a5c936ac904767fc1d943d40b0308bcb2ae2509b"
            },
            {
              "fixed": "d7d7208e2603b45724b684f4df73904fb347741e"
            },
            {
              "fixed": "85cf991c881e7198be32be05a9daa2625390c8b3"
            },
            {
              "fixed": "79347e42cfbc9e78872922e8f08a70609c9af82f"
            },
            {
              "fixed": "863f3ddd0b8ac65abfb50d3be0869268ac0e277b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.7.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90392.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix potential UAF when reading bpf link info\n\nIn bpf_link_show_fdinfo and bpf_link_get_info_by_fd, link-\u003eprog is\naccessed without holding any locks. If the prog is concurrently replaced\nvia bpf_link_update, the old prog can be freed, leading to a potential\nUAF issue.\n\nFix this by accessing link-\u003eprog under RCU protection to safely fetch\nthe pointer and guarantee its lifetime while reading its fields.",
  "id": "CVE-2026-90392",
  "modified": "2026-09-19T03:30:19.030501072Z",
  "published": "2026-09-17T16:09:25.738Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/79347e42cfbc9e78872922e8f08a70609c9af82f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85cf991c881e7198be32be05a9daa2625390c8b3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/863f3ddd0b8ac65abfb50d3be0869268ac0e277b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a5c936ac904767fc1d943d40b0308bcb2ae2509b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7d7208e2603b45724b684f4df73904fb347741e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90392.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90392"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "bpf: Fix potential UAF when reading bpf link info"
}