{"id":"CVE-2021-38166","revision":"d8c9a5b351ee4d2294134e95b1819b39","records":[{"revision":"d8c9a5b351ee4d2294134e95b1819b39","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2021-38166","aliases":[],"title":"In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAP_SYS_ADMIN capability.","description":"In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAP_SYS_ADMIN capability.","state":0,"publishedAt":"2021-08-07T17:50:52+00:00","modifiedAt":"2026-10-08T21:03:29.217+00:00","affected":[{"ecosystem":"Vendor product","name":"n/a","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"n/a\",\n                    \"vendor\": \"n/a\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"n/a\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu%40gmail.com/","https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=c4eb1f403243fc7bbb7de644db8587c03de36da6","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUVLBJKZMWA3E3YXSH4SZ7BOYGJP4GXP/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UL6CH5M5PRLMA3KPBX4LPUO6Z73GRISO/","https://security.netapp.com/advisory/ntap-20210909-0001/","https://www.debian.org/security/2021/dsa-4978"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2021-38166","license":"CVE Program Terms of Use","key":"cve-program:CVE-2021-38166","identifiers":["CVE-2021-38166"]},"retained":false,"historicalAffected":[]}],"coverage":[]}