{"cve":"CVE-2026-63864","nvd":{"published":"2026-07-19T15:16:53.303","modified":"2026-10-26T16:55:46.360","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Propagate error from visit_tailcall_insn\n\nCommit e40f5a6bf88a (\"bpf: correct stack liveness for tail calls\") added\nvisit_tailcall_insn() but did not check its return value.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.4},"cwes":[],"references":["https://git.kernel.org/stable/c/6bd96e40f31dde8f8cd79772b4df0f171cf8a915","https://git.kernel.org/stable/c/945816e63c8677cf4bfde963a0774432ce8afc85"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-26T17:23:06.845895309+00:00"},"epss":{"cve":"CVE-2026-63864","score":0.0018,"percentile":0.07472,"date":"2026-10-26"},"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."]}