CVE-2026-41681

Name	CVE-2026-41681
Description	rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.39 to before 0.10.78, EVP_DigestFinal() always writes EVP_MD_CTX_size(ctx) to the out buffer. If out is smaller than that, MdCtxRef::digest_final() writes past its end, usually corrupting the stack. This is reachable from safe Rust. This vulnerability is fixed in 0.10.78.
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)
Debian Bugs	1134881

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rust-openssl (PTS)	bookworm	0.10.45-1	vulnerable
	trixie	0.10.72-1	vulnerable
	forky, sid	0.10.81-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rust-openssl	source	(unstable)	0.10.78-1			1134881

Notes

[trixie] - rust-openssl <no-dsa> (Minor issue)
[bookworm] - rust-openssl <no-dsa> (Minor issue)
https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-ghm9-cr32-g9qj
https://github.com/rust-openssl/rust-openssl/pull/2608
https://github.com/rust-openssl/rust-openssl/commit/826c3888b77add418b394770e2b2e3a72d9f92fe (openssl-v0.10.78)