CVSS 3.1
6.0 mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:HCVE-2020-14311
Medium (6.0). EPSS 0.5% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 40% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-122, CWE-190
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- gnu:grub2
- opensuse:leap
- redhat:enterprise_linux
- redhat:enterprise_linux_eus
- redhat:enterprise_linux_server_aus
- redhat:enterprise_linux_server_tus
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