What’s Vulnerable › Vulnerabilities
CVE-2017-15116
- Severity: medium (CVSS 5.5 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2017-11-30 · updated 2026-06-17
- Weakness: CWE-476
Description
The rngapi_reset function in crypto/rng.c in the Linux kernel before 4.2 allows attackers to cause a denial of service (NULL pointer dereference).
Affected products
- Linux kernel: before 4.2 — fixed in 4.2
- Red Hat Enterprise Linux: 7.0
How to fix
Upgrade to a fixed version: Linux kernel 4.2. Check the vendor advisory for mitigations.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=94f1bb15bed84ad6c893916b7e7b9db6f1d7eec6
- https://access.redhat.com/errata/RHSA-2018:0676
- https://access.redhat.com/errata/RHSA-2018:1062
- https://bugzilla.redhat.com/show_bug.cgi?id=1485815
- https://bugzilla.redhat.com/show_bug.cgi?id=1514609
- https://github.com/torvalds/linux/commit/94f1bb15bed84ad6c893916b7e7b9db6f1d7eec6
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=94f1bb15bed84ad6c893916b7e7b9db6f1d7eec6
- https://access.redhat.com/errata/RHSA-2018:0676
- https://access.redhat.com/errata/RHSA-2018:1062
- https://bugzilla.redhat.com/show_bug.cgi?id=1485815
- https://bugzilla.redhat.com/show_bug.cgi?id=1514609
- https://github.com/torvalds/linux/commit/94f1bb15bed84ad6c893916b7e7b9db6f1d7eec6
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