Detections
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CVE-2020-14311
medium
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.
References
https://usn.ubuntu.com/4432-1/
https://security.gentoo.org/glsa/202104-05
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311
http://www.openwall.com/lists/oss-security/2021/09/21/1
http://www.openwall.com/lists/oss-security/2021/09/17/4
http://www.openwall.com/lists/oss-security/2021/09/17/2
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html