{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8"
            },
            {
              "fixed": "1534c4bff3aaca19c4c9a82f93e9b81f7c983de3"
            },
            {
              "fixed": "e2396b8a562073787e627a5f483f1bc5c452fa6a"
            },
            {
              "fixed": "7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "40e34ea01748e5b8afdd40a172868be1e1ab0ede"
            },
            {
              "last_affected": "388c9d3eefaea99828ee5000c693128a5b41ee7c"
            },
            {
              "last_affected": "acabf5df49aa3a4f9c96200102d893351b511a88"
            },
            {
              "last_affected": "e388671635acf470f0986d874389148fd234620b"
            },
            {
              "last_affected": "232f0ba4d69263af5912e279fcc32fef2882b1dc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.4.258"
            },
            {
              "fixed": "5.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.10.198"
            },
            {
              "fixed": "5.11"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.15.134"
            },
            {
              "fixed": "5.16"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.1.56"
            },
            {
              "fixed": "6.2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.5.6"
            },
            {
              "fixed": "6.6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.6.0"
            },
            {
              "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/2026/92xxx/CVE-2026-92520.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Zero queue and stack outputs on lock failure\n\nQueue and stack pop/peek helpers accept an uninitialized output buffer\nbecause the verifier expects the helper to initialize it. The empty-map\nerror path clears the buffer, but a failed lock acquisition returns\n-EBUSY without writing it.\n\nClear the output before returning -EBUSY so BPF programs cannot observe\nuninitialized stack contents after a failed helper call.",
  "id": "CVE-2026-92520",
  "modified": "2026-09-19T03:30:17.515009733Z",
  "published": "2026-09-17T16:10:27.447Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1534c4bff3aaca19c4c9a82f93e9b81f7c983de3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2396b8a562073787e627a5f483f1bc5c452fa6a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92520.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-92520"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "bpf: Zero queue and stack outputs on lock failure"
}