CVE-2024-50383

Name	CVE-2024-50383
Description	Botan before 3.6.0, when certain GCC versions are used, has a compiler-induced secret-dependent operation in lib/utils/donna128.h in donna128 (used in Chacha-Poly1305 and x25519). An addition can be skipped if a carry is not set. This was observed for GCC 11.3.0 with -O2 on MIPS, and GCC on x86-i386. (Only 32-bit processors can be affected.)
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1086039

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
botan (PTS)	bullseye	2.17.3+dfsg-2	vulnerable
	bookworm	2.19.3+dfsg-1	vulnerable
	sid, trixie	2.19.5+dfsg-3	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
botan	source	(unstable)	2.19.5+dfsg-3			1086039

Notes

[bookworm] - botan <no-dsa> (Minor issue)
[bullseye] - botan <postponed> (Minor issue; can be fixed in next update)
https://github.com/randombit/botan/commit/53b0cfde580e86b03d0d27a488b6c134f662e957 (3.6.0)