{"api_version":"1","generated_at":"2026-05-13T07:41:44+00:00","cve":"CVE-2026-43109","urls":{"html":"https://cve.report/CVE-2026-43109","api":"https://cve.report/api/cve/CVE-2026-43109.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43109","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43109"},"summary":{"title":"x86: shadow stacks: proper error handling for mmap lock","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86: shadow stacks: proper error handling for mmap lock\n\n김영민 reports that shstk_pop_sigframe() doesn't check for errors from\nmmap_read_lock_killable(), which is a silly oversight, and also shows\nthat we haven't marked those functions with \"__must_check\", which would\nhave immediately caught it.\n\nSo let's fix both issues.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-06 10:16:24","updated_at":"2026-05-11 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shadow stacks: proper error handling for mmap lock","CVE":"CVE-2026-43109","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43109","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86: shadow stacks: proper error handling for mmap lock\n\n김영민 reports that shstk_pop_sigframe() doesn't check for errors from\nmmap_read_lock_killable(), which is a silly oversight, and also shows\nthat we haven't marked those functions with \"__must_check\", which would\nhave immediately caught it.\n\nSo let's fix both issues.","Type":"Description","Title":"x86: shadow stacks: proper error handling for mmap lock"}]}}}