{"id":"CVE-2020-27171","revision":"e0a46031b21d4724a7fed0691675e948","records":[{"revision":"e0a46031b21d4724a7fed0691675e948","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2020-27171","aliases":[],"title":"An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that de…","description":"An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-10d2bb2e6b1d.","state":0,"publishedAt":"2021-03-20T21:41:40+00:00","modifiedAt":"2026-10-08T21:03:19.074+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://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.8","https://www.openwall.com/lists/oss-security/2021/03/19/3","https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/patch/?id=10d2bb2e6b1d8c4576c56a748f697dbeb8388899","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QRTPQE73ANG7D6M4L4PK5ZQDPO4Y2FVD/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FB6LUXPEIRLZH32YXWZVEZAD4ZL6SDK2/","http://www.openwall.com/lists/oss-security/2021/03/24/5","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T2S3I4SLRNRUQDOFYUS6IUAZMQNMPNLG/","https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html","http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2020-27171","license":"CVE Program Terms of Use","key":"cve-program:CVE-2020-27171","identifiers":["CVE-2020-27171"]},"retained":false,"historicalAffected":[]}],"coverage":[]}