CVE-2021-20284

A flaw was found in GNU Binutils 2.35.1, where there is a heap-based buffer overflow in _bfd_elf_slurp_secondary_reloc_section in elf.c due to the number of symbols not calculated correctly. The highest threat from this vulnerability is to system availability.

• CWE-119
• CWE-787

• https://bugzilla.redhat.com/show_bug.cgi?id=1937784Exploit, Issue Tracking, Third Party Advisory
• https://security.gentoo.org/glsa/202208-30Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210521-0010/Third Party Advisory
• https://sourceware.org/bugzilla/show_bug.cgi?id=26931Exploit, Issue Tracking, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1937784Exploit, Issue Tracking, Third Party Advisory
• https://security.gentoo.org/glsa/202208-30Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210521-0010/Third Party Advisory
• https://sourceware.org/bugzilla/show_bug.cgi?id=26931Exploit, Issue Tracking, Third Party Advisory

Published

Mar 26, 2021

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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