A buffer over-read flaw was found in RH kernel versions before 5.0 in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. When a payload 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.
The product reads data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1708775%3B | |
| https://lkml.org/lkml/2019/1/21/675 | patch mailing list exploit third party advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html | vendor advisory mailing list third party advisory |
| https://www.oracle.com/security-alerts/cpuApr2021.html |