Description
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.24 to before 0.10.78, the FFI trampolines behind SslContextBuilder::set_psk_client_callback, set_psk_server_callback, set_cookie_generate_cb, and set_stateless_cookie_generate_cb forwarded the user closure's returned usize directly to OpenSSL without checking it against the &mut [u8] that was handed to the closure. This can lead to buffer overflows and other unintended consequences. 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-hppc-g8h3-xhp3
Issue Tracking x_refsource_misc
https://github.com/rust-openssl/rust-openssl/pull/2607
Patch x_refsource_misc
https://github.com/rust-openssl/rust-openssl/commit/1d109020d98fff2fb2e45c39a373af3dff99b24c
Release Notes x_refsource_misc
https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.78
Scores
CVSS v3
9.8
EPSS
0.0041
EPSS Percentile
32.6%
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
no
Technical Impact
partial
Details
CWE
CWE-126
CWE-130
Status
published
Products (2)
crates.io/openssl
0.9.24 - 0.10.78crates.io
rust-openssl_project/rust-openssl
0.9.24 - 0.10.78
Published
Apr 24, 2026
Tracked Since
Apr 24, 2026