CVE-2026-4647

Name	CVE-2026-4647
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
binutils (PTS)	bullseye	2.35.2-2	vulnerable
	bookworm	2.40-2	vulnerable
	trixie	2.44-3	vulnerable
	forky, sid	2.46-3	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
binutils	source	(unstable)	(unfixed)	unimportant

Notes

https://sourceware.org/bugzilla/show_bug.cgi?id=33919
Fixed by: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9e99dbc1f19ffaf18d0250788951706066ebe7f2
binutils not covered by security support