{"api_version":"1","generated_at":"2026-09-25T22:21:46+00:00","cve":"CVE-2026-98075","urls":{"html":"https://cve.report/CVE-2026-98075","api":"https://cve.report/api/cve/CVE-2026-98075.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98075","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98075"},"summary":{"title":"bpf: reject BPF_PSEUDO_FUNC reference to the main program","description":"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->subprog_cnt > 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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:36","updated_at":"2026-09-25 11:17:36"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d6c39774ae093c9f7009cc4ae918f18fc1af7ae7","name":"https://git.kernel.org/stable/c/d6c39774ae093c9f7009cc4ae918f18fc1af7ae7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/374b2c5561db80fcdd7cdce44af37a49416f61c7","name":"https://git.kernel.org/stable/c/374b2c5561db80fcdd7cdce44af37a49416f61c7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6","name":"https://git.kernel.org/stable/c/92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/118212417ba0120d99f84154799f8880f07411f4","name":"https://git.kernel.org/stable/c/118212417ba0120d99f84154799f8880f07411f4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98075","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98075","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 69c087ba6225b574afb6e505b72cb75242a3d844 118212417ba0120d99f84154799f8880f07411f4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 69c087ba6225b574afb6e505b72cb75242a3d844 d6c39774ae093c9f7009cc4ae918f18fc1af7ae7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 69c087ba6225b574afb6e505b72cb75242a3d844 92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 69c087ba6225b574afb6e505b72cb75242a3d844 374b2c5561db80fcdd7cdce44af37a49416f61c7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.13","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"118212417ba0120d99f84154799f8880f07411f4","status":"affected","version":"69c087ba6225b574afb6e505b72cb75242a3d844","versionType":"git"},{"lessThan":"d6c39774ae093c9f7009cc4ae918f18fc1af7ae7","status":"affected","version":"69c087ba6225b574afb6e505b72cb75242a3d844","versionType":"git"},{"lessThan":"92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6","status":"affected","version":"69c087ba6225b574afb6e505b72cb75242a3d844","versionType":"git"},{"lessThan":"374b2c5561db80fcdd7cdce44af37a49416f61c7","status":"affected","version":"69c087ba6225b574afb6e505b72cb75242a3d844","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.13"},{"lessThan":"5.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc2","versionStartIncluding":"5.13","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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->subprog_cnt > 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."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:24:14.472Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/118212417ba0120d99f84154799f8880f07411f4"},{"url":"https://git.kernel.org/stable/c/d6c39774ae093c9f7009cc4ae918f18fc1af7ae7"},{"url":"https://git.kernel.org/stable/c/92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6"},{"url":"https://git.kernel.org/stable/c/374b2c5561db80fcdd7cdce44af37a49416f61c7"}],"title":"bpf: reject BPF_PSEUDO_FUNC reference to the main program","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98075","datePublished":"2026-09-25T10:24:14.472Z","dateReserved":"2026-09-25T10:19:56.074Z","dateUpdated":"2026-09-25T10:24:14.472Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:36","lastModifiedDate":"2026-09-25 11:17:36","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98075","Ordinal":"1","Title":"bpf: reject BPF_PSEUDO_FUNC reference to the main program","CVE":"CVE-2026-98075","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98075","Ordinal":"1","NoteData":"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->subprog_cnt > 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.","Type":"Description","Title":"bpf: reject BPF_PSEUDO_FUNC reference to the main program"}]}}}