{"id":"CVE-2024-58100","summary":"bpf: check changes_pkt_data property for extension programs","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: check changes_pkt_data property for extension programs\n\nWhen processing calls to global sub-programs, verifier decides whether\nto invalidate all packet pointers in current state depending on the\nchanges_pkt_data property of the global sub-program.\n\nBecause of this, an extension program replacing a global sub-program\nmust be compatible with changes_pkt_data property of the sub-program\nbeing replaced.\n\nThis commit:\n- adds changes_pkt_data flag to struct bpf_prog_aux:\n  - this flag is set in check_cfg() for main sub-program;\n  - in jit_subprogs() for other sub-programs;\n- modifies bpf_check_attach_btf_id() to check changes_pkt_data flag;\n- moves call to check_attach_btf_id() after the call to check_cfg(),\n  because it needs changes_pkt_data flag to be set:\n\n    bpf_check:\n      ...                             ...\n    - check_attach_btf_id             resolve_pseudo_ldimm64\n      resolve_pseudo_ldimm64   --\u003e    bpf_prog_is_offloaded\n      bpf_prog_is_offloaded           check_cfg\n      check_cfg                     + check_attach_btf_id\n      ...                             ...\n\nThe following fields are set by check_attach_btf_id():\n- env-\u003eops\n- prog-\u003eaux-\u003eattach_btf_trace\n- prog-\u003eaux-\u003eattach_func_name\n- prog-\u003eaux-\u003eattach_func_proto\n- prog-\u003eaux-\u003edst_trampoline\n- prog-\u003eaux-\u003emod\n- prog-\u003eaux-\u003esaved_dst_attach_type\n- prog-\u003eaux-\u003esaved_dst_prog_type\n- prog-\u003eexpected_attach_type\n\nNeither of these fields are used by resolve_pseudo_ldimm64() or\nbpf_prog_offload_verifier_prep() (for netronome and netdevsim\ndrivers), so the reordering is safe.","modified":"2026-04-02T12:25:31.783060Z","published":"2025-05-05T14:53:33.445Z","related":["SUSE-SU-2025:01964-1","SUSE-SU-2025:01965-1","SUSE-SU-2025:02000-1","SUSE-SU-2025:02254-1","SUSE-SU-2025:02307-1","SUSE-SU-2025:02333-1","SUSE-SU-2025:02923-1","SUSE-SU-2025:20408-1","SUSE-SU-2025:20413-1","SUSE-SU-2025:20419-1","SUSE-SU-2025:20421-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/58xxx/CVE-2024-58100.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3846e2bea565ee1c5195dcc625fda9868fb0e3b3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7197fc4acdf238ec8ad06de5a8235df0c1f9c7d7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/81f6d0530ba031b5f038a091619bf2ff29568852"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/58xxx/CVE-2024-58100.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-58100"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"be8704ff07d2374bcc5c675526f95e70c6459683"},{"fixed":"7197fc4acdf238ec8ad06de5a8235df0c1f9c7d7"},{"fixed":"3846e2bea565ee1c5195dcc625fda9868fb0e3b3"},{"fixed":"81f6d0530ba031b5f038a091619bf2ff29568852"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-58100.json"}}],"schema_version":"1.7.5"}