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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
The Grub2 Project grub2
2.06affected
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311 ↗
- https://usn.ubuntu.com/4432-1/ ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html ↗
- https://security.gentoo.org/glsa/202104-05 ↗
- 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 ↗