{"cve":"CVE-2020-14311","nvd":{"published":"2020-07-31T22:15:11.597","modified":"2026-06-17T02:54:30.877","status":"Modified","description":"There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H","score":6.0},"cwes":["CWE-122","CWE-190"],"references":["http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html","http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html","http://www.openwall.com/lists/oss-security/2021/09/17/2","http://www.openwall.com/lists/oss-security/2021/09/17/4","http://www.openwall.com/lists/oss-security/2021/09/21/1"],"products":["canonical:ubuntu_linux","gnu:grub2","opensuse:leap","redhat:enterprise_linux","redhat:enterprise_linux_eus","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_tus"],"source":"nvd","synced_at":"2026-10-19T21:06:22.076270124+00:00"},"epss":{"cve":"CVE-2020-14311","score":0.00465,"percentile":0.40304,"date":"2026-11-01"},"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."]}