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.
References (4)
Core 4
Core References
Vendor Advisory x_refsource_confirm
https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-ghm9-cr32-g9qj
Issue Tracking x_refsource_misc
https://github.com/rust-openssl/rust-openssl/pull/2608
Patch x_refsource_misc
https://github.com/rust-openssl/rust-openssl/commit/826c3888b77add418b394770e2b2e3a72d9f92fe
Release Notes x_refsource_misc
https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.78
Scores
CVSS v3
9.8
EPSS
0.0037
EPSS Percentile
28.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-121
Status
published
Products (2)
crates.io/openssl
0.10.39 - 0.10.78crates.io
rust-openssl_project/rust-openssl
0.10.39 - 0.10.78
Published
Apr 24, 2026
Tracked Since
Apr 24, 2026