What’s Vulnerable › Vulnerabilities

CVE-2016-7117

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 23.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-10-10 · updated 2026-06-17
• Weakness: CWE-19

Description

Use-after-free vulnerability in the __sys_recvmmsg function in net/socket.c in the Linux kernel before 4.5.2 allows remote attackers to execute arbitrary code via vectors involving a recvmmsg system call that is mishandled during error processing.

Affected products

• Canonical Ubuntu Linux: 16.04
• Debian Linux: 7.0
• Linux kernel: from 2.6.33 before 3.2.80; from 3.3 before 3.4.113; from 3.5 before 3.10.102; from 3.11 before 3.12.59; from 3.13 before 3.14.67; from 3.15 before 3.16.35 — fixed in 3.10.102, 3.12.59, 3.14.67, 3.16.35, 3.18.37, 3.2.80

How to fix

Upgrade to a fixed version: Linux kernel 3.10.102, 3.12.59, 3.14.67, 3.16.35. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b88a68f26a75e4fded796f1a49c40f82234b7d
• http://rhn.redhat.com/errata/RHSA-2016-2962.html
• http://rhn.redhat.com/errata/RHSA-2017-0031.html
• http://rhn.redhat.com/errata/RHSA-2017-0036.html
• http://rhn.redhat.com/errata/RHSA-2017-0065.html
• http://rhn.redhat.com/errata/RHSA-2017-0086.html
• http://rhn.redhat.com/errata/RHSA-2017-0091.html
• http://rhn.redhat.com/errata/RHSA-2017-0113.html
• http://rhn.redhat.com/errata/RHSA-2017-0196.html
• http://rhn.redhat.com/errata/RHSA-2017-0215.html
• http://rhn.redhat.com/errata/RHSA-2017-0216.html
• http://rhn.redhat.com/errata/RHSA-2017-0217.html

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