CWE Code: 20
Vulnerability Type: privilege_escalation
CVSS Score: 7.2
CWE Name:  Improper Input Validation
Summary: a flaw was found in the crypto subsystem of the linux kernel before version kernel-4.15-rc4. the "null skcipher" was being dropped when each af_alg_ctx was freed instead of when the aead_tfm was freed. this can cause the null skcipher to be freed while it is still in use leading to a local user being able to crash the system or possibly escalate privileges.
Access Authentication: NONE
Access Complexity: LOW
Access Vector: LOCAL
Impact (C/I/A): COMPLETE/COMPLETE/COMPLETE
Published Date: 2018-08-30
Last Modified Date: 2019-10-09