{"id":"CVE-2024-45779","title":"An integer overflow flaw was found in the BFS file system driver in grub2","summary":"An integer overflow flaw was found in the BFS file system driver in grub2. When reading a file with an indirect extent map, grub2 fails to validate the number of extent entries to be read. A crafted or corrupted BFS filesystem may cause …","severity":"medium","cvss":6,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H","cwe":["CWE-190","CWE-190"],"vendor":"gnu","product":"grub2","affected":["grub2 <= 2.12"],"published":"2025-03-03","updated":"2026-06-25","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-45779","references":[{"url":"https://access.redhat.com/security/cve/CVE-2024-45779","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2345854","label":"secalert@redhat.com"},{"url":"https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.00286,"epssPercentile":0.21365,"ingestedAt":"2026-06-29T13:24:34.176Z","slug":"CVE-2024-45779","body":"## Overview\n\nAn integer overflow flaw was found in the BFS file system driver in grub2. When reading a file with an indirect extent map, grub2 fails to validate the number of extent entries to be read. A crafted or corrupted BFS filesystem may cause an integer overflow during the file reading, leading to a heap of bounds read. As a consequence, sensitive data may be leaked, or grub2 will crash.\n\n## Affected\n\n- `grub2 <= 2.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":33,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}