{"id":"CVE-2026-98075","revision":"d1a0612c7bb34c9d8f4e9474e4d75553","records":[{"revision":"d1a0612c7bb34c9d8f4e9474e4d75553","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98075","aliases":[],"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":0,"publishedAt":"2026-09-25T10:24:14.472+00:00","modifiedAt":"2026-10-19T09:13:24.903+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/bpf/verifier.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"69c087ba6225b574afb6e505b72cb75242a3d844\",\n                            \"lessThan\": \"c74750dca96f40a1adb9d334f5a3152f44b270c3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"69c087ba6225b574afb6e505b72cb75242a3d844\",\n                            \"lessThan\": \"314c8caa9cb64ad60c5b969fe9a3e2dcdccf156f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"69c087ba6225b574afb6e505b72cb75242a3d844\",\n                            \"lessThan\": \"8cb75f7ada25b1cf25f2f74dec3ba649b9064a09\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"69c087ba6225b574afb6e505b72cb75242a3d844\",\n                            \"lessThan\": \"118212417ba0120d99f84154799f8880f07411f4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"69c087ba6225b574afb6e505b72cb75242a3d844\",\n                            \"lessThan\": \"d6c39774ae093c9f7009cc4ae918f18fc1af7ae7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"69c087ba6225b574afb6e505b72cb75242a3d844\",\n                            \"lessThan\": \"92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"69c087ba6225b574afb6e505b72cb75242a3d844\",\n                            \"lessThan\": \"374b2c5561db80fcdd7cdce44af37a49416f61c7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/bpf/verifier.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.13\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.13\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/c74750dca96f40a1adb9d334f5a3152f44b270c3","https://git.kernel.org/stable/c/314c8caa9cb64ad60c5b969fe9a3e2dcdccf156f","https://git.kernel.org/stable/c/8cb75f7ada25b1cf25f2f74dec3ba649b9064a09","https://git.kernel.org/stable/c/118212417ba0120d99f84154799f8880f07411f4","https://git.kernel.org/stable/c/d6c39774ae093c9f7009cc4ae918f18fc1af7ae7","https://git.kernel.org/stable/c/92f0bd0e2b632c6565ac2214a4d7d2ed37e5b9f6","https://git.kernel.org/stable/c/374b2c5561db80fcdd7cdce44af37a49416f61c7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98075","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98075","identifiers":["CVE-2026-98075"]},"retained":false,"historicalAffected":[]}],"coverage":[]}