{"id":"CVE-2025-39990","revision":"d5fec9167b1847718758f657bc29be31","records":[{"revision":"d5fec9167b1847718758f657bc29be31","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-39990","aliases":[],"title":"bpf: Check the helper function is valid in get_helper_proto","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Check the helper function is valid in get_helper_proto\n\nkernel test robot reported verifier bug [1] where the helper func\npointer could be NULL due to disabled config option.\n\nAs Alexei suggested we could check on that in get_helper_proto\ndirectly. Marking tail_call helper func with BPF_PTR_POISON,\nbecause it is unused by design.\n\n  [1] https://lore.kernel.org/oe-lkp/202507160818.68358831-lkp@intel.com","state":0,"publishedAt":"2025-10-15T07:56:07.295+00:00","modifiedAt":"2026-10-21T12:37:41.13+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/core.c\",\n                        \"kernel/bpf/verifier.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"f470378c7562a2818b45ed11c98973f2b89eedd3\",\n                            \"lessThan\": \"dfbff47f120e4b0793ca0e0b8660361ccac25a74\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f470378c7562a2818b45ed11c98973f2b89eedd3\",\n                            \"lessThan\": \"3d429cb1278e995e22995ef117fa96d223a67e93\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f470378c7562a2818b45ed11c98973f2b89eedd3\",\n                            \"lessThan\": \"6233715b4b714068d6c831d214a4e8792109875a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f470378c7562a2818b45ed11c98973f2b89eedd3\",\n                            \"lessThan\": \"e4414b01c1cd9887bbde92f946c1ba94e40d6d64\",\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/core.c\",\n                        \"kernel/bpf/verifier.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.50\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.16.10\",\n                            \"lessThanOrEqual\": \"6.16.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/dfbff47f120e4b0793ca0e0b8660361ccac25a74","https://git.kernel.org/stable/c/3d429cb1278e995e22995ef117fa96d223a67e93","https://git.kernel.org/stable/c/6233715b4b714068d6c831d214a4e8792109875a","https://git.kernel.org/stable/c/e4414b01c1cd9887bbde92f946c1ba94e40d6d64"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-39990","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-39990","identifiers":["CVE-2025-39990"]},"retained":false,"historicalAffected":[]}],"coverage":[]}