{"id":"GHSA-8c75-8mhr-p7r9","summary":"rust-openssl has incorrect bounds assertion in aes key wrap","details":"### Summary\n``aes::unwrap_key()`` has an incorrect bounds assertion on the out buffer size, which can lead to out-of-bounds write.\n\n### Details\n``aes::unwrap_key()`` contains an incorrect assertion: it checks that `out.len() + 8 \u003c= in_.len()`, but this condition is reversed. The intended invariant is `out.len() \u003e= in_.len() - 8`, ensuring the output buffer is large enough.\n\nBecause of the inverted check, the function only accepts buffers at or below the minimum required size and rejects larger ones. If a smaller buffer is provided the function will write past the end of `out` by `in_.len() - 8 - out.len()` bytes, causing an out-of-bounds write from a safe public function.\n\n### Impact\nVulnerable applications using AES keywrap and allowing attacker controlled buffer sizes could have an attacker trigger an out-of-bounds write.","aliases":["CVE-2026-41678"],"modified":"2026-07-17T21:08:37.771127968Z","published":"2026-04-22T21:17:32Z","database_specific":{"nvd_published_at":"2026-04-24T18:16:29Z","cwe_ids":["CWE-787"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-04-22T21:17:32Z"},"references":[{"type":"WEB","url":"https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-8c75-8mhr-p7r9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41678"},{"type":"WEB","url":"https://github.com/rust-openssl/rust-openssl/pull/2604"},{"type":"WEB","url":"https://github.com/rust-openssl/rust-openssl/commit/718d07ff8ff7be417d5b7a6a0047f1607520b3b6"},{"type":"PACKAGE","url":"https://github.com/rust-openssl/rust-openssl"},{"type":"WEB","url":"https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.78"}],"affected":[{"package":{"name":"openssl","ecosystem":"crates.io","purl":"pkg:cargo/openssl"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.10.24"},{"fixed":"0.10.78"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-8c75-8mhr-p7r9/GHSA-8c75-8mhr-p7r9.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U"}]}