CVE-2020-14311

Summary

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 Software

Weaknesses

• CWE-190: CWE-190
• CWE-122: CWE-122

ADP Enrichment

CVE Program Container

Additional 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

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

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