Date: Tue, 23 Jun 2020 16:52:12 +0530 From: Rohit Keshri <rkeshri@...hat.com> To: oss-security@...ts.openwall.com Subject: CVE-2020-10769 kernel: Buffer over-read in crypto_authenc_extractkeys() when a payload longer than 4 bytes is not aligned. Hello Team, Red Hats kernel has a flaw in Authenticated Encryption with Associated Data (AEAD), a form of encryption technique which simultaneously assures the confidentiality and authenticity of data with below details. A buffer over-read flaw was found in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm’s module, authenc. When a payload is longer than 4 bytes, and is not following 4-byte alignment boundary guidelines, it causes a buffer over-read threat, leading to a system crash. This flaw allows a local attacker with user privileges to cause a denial of service. 'CVE-2020-10769' was assigned by Red Hat Inc. Upstream fix: https://lkml.org/lkml/2019/1/21/675 Thank you .. Rohit Keshri / Red Hat Product Security Team PGP: OX01BC 858A 07B7 15C8 EF33 BFE2 2EEB 0CBC 84A4 4C2D
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