RUSTSEC-2026-0124

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Source

https://rustsec.org/advisories/RUSTSEC-2026-0124

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0124.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2026-0124

Aliases

GHSA-hc3c-63hc-2r9f

Published

2026-03-29T12:00:00Z

Modified

2026-05-20T07:15:03.934256757Z

Severity

8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

Potential Panic on Overlong Ciphertext Buffer

Details

An application that passes in a ciphertext buffer of length greater than ptxt.len() + TAG_LEN to libcrux_chacha20poly1305::encrypt or libcrux_chacha20poly1305::xchacha20_poly1305::encrypt would experience a panic.

Impact

An application where the length of the ciphertext buffer is under attacker control could be made to crash.

Mitigation

The fix makes it so that libcrux_chacha20poly1305::encrypt and libcrux_chacha20poly1305::xchacha20_poly1305::encrypt no longer panic in this case, but instead write out the ciphertext and tag into the first ptxt.len() + TAG_LEN bytes of the provided buffer.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / libcrux-chacha20poly1305

Package

Name: libcrux-chacha20poly1305; View open source insights on deps.dev
Purl: pkg:cargo/libcrux-chacha20poly1305

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Fixed

0.0.8

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "arch": [],
        "functions": [
            "libcrux_chacha20poly1305::encrypt",
            "libcrux_chacha20poly1305::xchacha20_poly1305::encrypt"
        ],
        "os": []
    }
}