{"cve":"CVE-2021-46908","nvd":{"published":"2024-02-27T07:15:06.977","modified":"2026-08-04T10:16:35.773","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Use correct permission flag for mixed signed bounds arithmetic\n\nWe forbid adding unknown scalars with mixed signed bounds due to the\nspectre v1 masking mitigation. Hence this also needs bypass_spec_v1\nflag instead of allow_ptr_leaks.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51","https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6","https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be","https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51","https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2021-46908","score":0.00243,"percentile":0.15519,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}