The Keccak XKCP SHA-3 reference implementation before fdc6fef has an integer overflow and resultant buffer overflow that allows attackers to execute arbitrary code or eliminate expected cryptographic properties. This occurs in the sponge function interface.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/XKCP/XKCP/security/advisories/GHSA-6w4m-2xhg-2658 Patch, Third Party Advisory
- https://github.com/XKCP/XKCP/security/advisories/GHSA-6w4m-2xhg-2658 Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.8 · extended_keccak_code_package_project, debian, fedoraprojectNVD modified 2026-10-14 18:17
Affected (CPE criteria) 10
cpe:2.3:a:extended_keccak_code_package_project:extended_keccak_code_package:-:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*cpe:2.3:a:php:php:*:*:*:*:*:*:*:*cpe:2.3:a:python:python:*:*:*:*:*:*:*:*cpe:2.3:a:sha3_project:sha3:*:*:*:*:*:ruby:*:*cpe:2.3:a:pysha3_project:pysha3:*:*:*:*:*:*:*:*cpe:2.3:a:pypy:pypy:*:*:*:*:*:*:*:*
References 30
- https://csrc.nist.gov/projects/hash-functions/sha-3-project Third Party Advisory, US Government Resource
- https://eprint.iacr.org/2023/331
- https://github.com/XKCP/XKCP/security/advisories/GHSA-6w4m-2xhg-2658 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00041.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00000.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3ALQ6BDDPX5HU5YBQOBMDVAA2TSGDKIJ/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMIEXLMTW5GO36HTFFWIPB3OHZXCT3G4/ Mailing List, Third Party Advisory
- https://mouha.be/sha-3-buffer-overflow/ Exploit, Third Party Advisory
- https://news.ycombinator.com/item?id=33281106 Issue Tracking, Third Party Advisory
- https://news.ycombinator.com/item?id=35050307
- https://security.gentoo.org/glsa/202305-02
- https://www.debian.org/security/2022/dsa-5267 Third Party Advisory
- https://www.debian.org/security/2022/dsa-5269 Third Party Advisory
- https://csrc.nist.gov/projects/hash-functions/sha-3-project Third Party Advisory, US Government Resource
- https://eprint.iacr.org/2023/331
- https://github.com/XKCP/XKCP/security/advisories/GHSA-6w4m-2xhg-2658 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00041.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00000.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3ALQ6BDDPX5HU5YBQOBMDVAA2TSGDKIJ/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMIEXLMTW5GO36HTFFWIPB3OHZXCT3G4/ Mailing List, Third Party Advisory
- https://mouha.be/sha-3-buffer-overflow/ Exploit, Third Party Advisory
- https://news.ycombinator.com/item?id=33281106 Issue Tracking, Third Party Advisory
- https://news.ycombinator.com/item?id=35050307
- https://security.gentoo.org/glsa/202305-02
- https://security.netapp.com/advisory/ntap-20230203-0001/
- https://www.debian.org/security/2022/dsa-5267 Third Party Advisory
- https://www.debian.org/security/2022/dsa-5269 Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-455250.html
- https://cert-portal.siemens.com/productcert/html/ssa-806742.html