CVE-2018-18605

Name	CVE-2018-18605
Description	A heap-based buffer over-read issue was discovered in the function sec_merge_hash_lookup in merge.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31, because _bfd_add_merge_section mishandles section merges when size is not a multiple of entsize. A specially crafted ELF allows remote attackers to cause a denial of service, as demonstrated by ld.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, 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)	jessie, jessie (lts)	2.25-5+deb8u2	vulnerable
	stretch (lts), stretch	2.28-5+deb9u1	vulnerable
	buster, buster (lts)	2.31.1-16+deb10u1	vulnerable
	bullseye	2.35.2-2	fixed
	bookworm	2.40-2	fixed
	trixie	2.43.50.20241215-1	fixed
	sid	2.43.50.20241221-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
binutils	source	experimental	2.31.51.20181204-1
binutils	source	(unstable)	2.32.51.20190707-1	unimportant

Notes

https://sourceware.org/bugzilla/show_bug.cgi?id=23804
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ab419ddbb2cdd17ca83618990f2cacf904ce1d61
binutils not covered by security support