Description
A flaw was found in the GNU Binutils BFD library, a widely used component for handling binary files such as object files and executables. The issue occurs when processing specially crafted XCOFF object files, where a relocation type value is not properly validated before being used. This can cause the program to read memory outside of intended bounds. As a result, affected tools may crash or expose unintended memory contents, leading to denial-of-service or limited information disclosure risks.
Problem types
Product status
Timeline
| 2026-03-23: | Reported to Red Hat. |
| 2026-03-23: | Made public. |
Credits
Red Hat would like to thank Chen Zhengzhe (Hangzhou Dianzi University) for reporting this issue.
References
access.redhat.com/security/cve/CVE-2026-4647
bugzilla.redhat.com/show_bug.cgi?id=2450302 (RHBZ#2450302)
sourceware.org/bugzilla/show_bug.cgi?id=33919