CVE-2026-41898
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Fixed | 0.10.78-1 |
| forky | Fixed | 0.10.78-1 |
| bullseye | Affected | — |
| bookworm | Affected | — |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| crates.io | openssl | >=0.9.24,<0.10.78 | 0.10.78 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| rust-openssl_project | rust-openssl | {"startIncluding":"0.9.24","endExcluding":"0.10.78"} | 0.10.78 |
References
- https://github.com/rust-openssl/rust-openssl/commit/1d109020d98fff2fb2e45c39a373af3dff99b24c
- https://github.com/rust-openssl/rust-openssl/pull/2607
- https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.78
- https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-hppc-g8h3-xhp3
- https://nvd.nist.gov/vuln/detail/CVE-2026-41898
- https://github.com/rust-openssl/rust-openssl
- https://security-tracker.debian.org/tracker/CVE-2026-41898
CWEs
CWE-126 CWE-130
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.