rust-opennssl has an Out-of-bounds read in PEM password callback when returning an oversized length
The `*_from_pem_callback` APIs did not validate the length returned by the user's callback. A password callback that returns a value larger than the buffer it was given can cause some versions of OpenSSL to over-read this buffer. OpenSSL 3.x is not affected by this.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-41677US | critical9.1 | — | ||
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.0 to before 0.10.78, the *_from_pem_callback APIs did not validate the length returned by the us… | ||||
02
references
External citations — patches, advisories, analysis.
- https://github.com/rust-openssl/rust-opensslPACKAGE
- https://github.com/rust-openssl/rust-openssl/commit/5af6895c907773699f37f583f409b862284062b1WEB
- https://github.com/rust-openssl/rust-openssl/pull/2605WEB
- https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.78WEB
- https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-xmgf-hq76-4vx2WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-41677ADVISORY
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