RUSTSEC-2026-0475

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Source

https://rustsec.org/advisories/RUSTSEC-2026-0475

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0475.json

JSON Data

https://api.test.osv.dev/v1/vulns/RUSTSEC-2026-0475

Aliases

Published

2026-04-19T12:00:00Z

Modified

2026-11-10T14:00:04Z

Summary

Buffer overflow in `MdCtxRef::digest_final`

Details

MdCtxRef::digest_final passed the caller's output slice to OpenSSL's EVP_DigestFinal without checking its length. EVP_DigestFinal always writes the full digest (EVP_MD_CTX_size bytes), so an output slice shorter than the digest is overrun. With a stack buffer this usually corrupts the stack. The overflow is reachable from safe code.

MdCtxRef was added in 0.10.39. 0.10.78 checks the slice length first and returns an error when the slice is too short for the digest.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / openssl

Package

Name: openssl; View open source insights on deps.dev
Purl: pkg:cargo/openssl

Affected ranges

Type: SEMVER
Events: Introduced

0.10.39

Fixed

0.10.78

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "arch": [],
        "functions": [
            "openssl::md_ctx::MdCtxRef::digest_final"
        ],
        "os": []
    }
}