Tracker / CVE-2017-17806
CVE-2017-17806
High 7.8
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, allowing 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.
Affected products and versions
| canonical | ubuntu_linux |
|---|---|
| debian | debian_linux |
| linux | linux_kernel · … → 3.2.97 |
| linux | linux_kernel · 3.17 → 3.18.89 |
| linux | linux_kernel · 3.19 → 4.1.49 |
| linux | linux_kernel · 3.3 → 3.16.52 |
| linux | linux_kernel · 4.10 → 4.14.8 |
| linux | linux_kernel · 4.2 → 4.4.107 |
| linux | linux_kernel · 4.5 → 4.9.71 |
| opensuse | leap |
| opensuse_project | leap |
| suse | linux_enterprise_desktop |
| suse | linux_enterprise_server |
| suse | linux_enterprise_server_for_raspberry_pi |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.