CVE-2016-4565

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-05-23 · updated 2026-06-17
Weakness: CWE-264

Description

The InfiniBand (aka IB) stack in the Linux kernel before 4.5.3 incorrectly relies on the write system call, which allows local users to cause a denial of service (kernel memory write operation) or possibly have unspecified other impact via a uAPI interface.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 15.10, 16.04
Debian Linux: 8.0
Linux kernel: before 3.2.81; from 3.3 before 3.10.103; from 3.11 before 3.12.61; from 3.13 before 3.14.76; from 3.15 before 3.16.36; from 3.17 before 3.18.34 — fixed in 3.10.103, 3.12.61, 3.14.76, 3.16.36, 3.18.34, 3.2.81

How to fix

Upgrade to a fixed version: Linux kernel 3.10.103, 3.12.61, 3.14.76, 3.16.36. Check the vendor advisory for mitigations.

References

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