CVE-2026-41677 — rust-openssl: Out-of-bounds read in PEM password callback when user callback returns an oversized length

2026-09-28T14:09:01.227882+00:00

Affected: rust-openssl

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 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. This vulnerability is fixed in 0.10.78.

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CVE-2026-41677 — rust-openssl: Out-of-bounds read in PEM password callback when user callback returns an oversized length