CVE-2026-55967

Name	CVE-2026-55967
Description	AES-GCM encryption/decryption with extremely large cumulative single message sizes (>64 GiB) were not properly rejected by the streaming APIs, allowing counter wrap, keystream reuse, and consequent plaintext recovery.
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)
References	DLA-4683-1
Debian Bugs	1140765

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
wolfssl (PTS)	bullseye	4.6.0+p1-0+deb11u2	vulnerable
	bookworm	5.5.4-2+deb12u2	vulnerable
	bookworm (security)	5.5.4-2+deb12u3	fixed
	trixie	5.7.2-0.1+deb13u1	vulnerable
	sid	5.9.2-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
wolfssl	source	bookworm	5.5.4-2+deb12u3		DLA-4683-1
wolfssl	source	(unstable)	5.9.2-1			1140765

Notes

[trixie] - wolfssl <no-dsa> (Minor issue)
[bullseye] - wolfssl <postponed> (Minor issue)
https://github.com/wolfSSL/wolfssl/pull/10709 (v5.9.2-stable)