CVE-2020-14308

In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.

• CWE-190

• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/07/29/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/09/17/2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/09/17/4Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/09/21/1Mailing List, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1852009Issue Tracking, Third Party Advisory
• https://security.gentoo.org/glsa/202104-05Third Party Advisory
• https://security.netapp.com/advisory/ntap-20200731-0008/Third Party Advisory
• https://usn.ubuntu.com/4432-1/Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/07/29/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/09/17/2Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/09/17/4Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/09/21/1Mailing List, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1852009Issue Tracking, Third Party Advisory
• https://security.gentoo.org/glsa/202104-05Third Party Advisory
• https://security.netapp.com/advisory/ntap-20200731-0008/Third Party Advisory
• https://usn.ubuntu.com/4432-1/Third Party Advisory

Published

Jul 29, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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