{"id":"CVE-2026-63864","summary":"bpf: Propagate error from visit_tailcall_insn","details":"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.","modified":"2026-07-22T05:30:05.358457256Z","published":"2026-07-19T14:04:50.605Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63864.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6bd96e40f31dde8f8cd79772b4df0f171cf8a915"},{"type":"WEB","url":"https://git.kernel.org/stable/c/945816e63c8677cf4bfde963a0774432ce8afc85"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63864.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63864"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e40f5a6bf88a781d5f81bc6b8aab9ac31d8c98dd"},{"fixed":"945816e63c8677cf4bfde963a0774432ce8afc85"},{"fixed":"6bd96e40f31dde8f8cd79772b4df0f171cf8a915"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63864.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63864.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}