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Redhat.comRH:CVE-2017-17806HistoryDec 21, 2017 - 2:49 p.m.
CVE-2017-17806
2017-12-2114:49:40
redhat.com
access.redhat.com
29
EPSS
0
Percentile
10.1%
The HMAC implementation (crypto/hmac.c) in the Linux kernel, before 4.14.8, does not validate that the underlying cryptographic hash algorithm is unkeyed. This allows a local attacker, able to use the AF_ALG-based hash interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash algorithm (CONFIG_CRYPTO_SHA3), to cause a kernel stack buffer overflow by executing a crafted sequence of system calls that encounter a missing SHA-3 initialization.
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