{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "69c087ba6225b574afb6e505b72cb75242a3d844"
            },
            {
              "fixed": "118212417ba0120d99f84154799f8880f07411f4"
            },
            {
              "fixed": "d6c39774ae093c9f7009cc4ae918f18fc1af7ae7"
            },
            {
              "fixed": "92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6"
            },
            {
              "fixed": "374b2c5561db80fcdd7cdce44af37a49416f61c7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.13.0"
            },
            {
              "fixed": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98075.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: reject BPF_PSEUDO_FUNC reference to the main program\n\nfixups.c:jit_subprogs() rewrites BPF_PSEUDO_FUNC loads to contain real\nfunction addresses. This function is invoked from bpf_jit_subprogs()\nonly when env-\u003esubprog_cnt \u003e 1. Meaning that for any program like\nbelow:\n\n  int main(void *ctx) {\n    void *ptr = main;\n    ...\n    bpf_timer_set_callback(..., ptr);\n    ...\n  }\n\nThe 'ptr' won't be ever converted to contain an address.\nIn combination with e.g. bpf_timer_set_callback() this would lead to a\nfunction call at a bogus address.\n\nInstead of complicating the implementation, just assume that no useful\nprogram needs main to be a sync or async callback and reject\nBPF_PSEUDO_FUNC loads for the main subprogram.",
  "id": "CVE-2026-98075",
  "modified": "2026-09-27T03:30:24.151399461Z",
  "published": "2026-09-25T10:24:14.472Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/118212417ba0120d99f84154799f8880f07411f4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/374b2c5561db80fcdd7cdce44af37a49416f61c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d6c39774ae093c9f7009cc4ae918f18fc1af7ae7"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98075.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98075"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "bpf: reject BPF_PSEUDO_FUNC reference to the main program"
}