CVE-2016-7117

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.

Published: 2016-10-10 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-7117 is rated High Risk (78.4/100): CVSS Critical severity, with high exploitation likelihood (EPSS 24.30%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +9.54% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-7117

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 14.75% 24.30% +9.54%
2 2026-06-05 13.69% 14.75% +1.07%
3 2026-05-30 — 13.69% —

Full EPSS history (20 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-7117

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2016-7117

OS Trackers for CVE-2016-7117

vendor priority summary link
debian not yet assigned CVE-2016-7117 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2016-7117
redhat high — https://access.redhat.com/security/cve/CVE-2016-7117
suse medium CVE-2016-7117 severity moderate: SUSE including 204 source package names (cluster-md-kmp-default-4.4.49-92.11.1, cluster-md-kmp-rt-4.4.74-7.10.1, …), 572 product×package rows across 73 product lines (HPE Helion OpenStack 8, SLES for SAP Applications 11 SP3, … (73 product lines)): Fixed 354, Known Not Affected 218. https://www.suse.com/security/cve/CVE-2016-7117/
ubuntu medium CVE-2016-7117 medium priority: Ubuntu including 27 source packages (linux, linux-armadaxp, …), 162 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): DNE 103, released 37, ignored 11, not-affected 11. https://ubuntu.com/security/CVE-2016-7117

Affected software / configurations for CVE-2016-7117

Vendor Product Version Raw CPE
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
linux linux_kernel >= 2.6.33, < 3.2.80 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.3, < 3.4.113 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.5, < 3.10.102 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.11, < 3.12.59 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.13, < 3.14.67 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.15, < 3.16.35 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.17, < 3.18.37 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.19, < 4.1.28 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.2.0, < 4.4.8 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.5.0, < 4.5.2 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

References for CVE-2016-7117

URL Tags
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b88a68f26a75e4fded796f1a49c40f82234b7d Issue Tracking Patch Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2016-2962.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0031.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0036.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0065.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0086.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0091.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0113.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0196.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0215.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0216.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0217.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0270.html Third Party Advisory
http://source.android.com/security/bulletin/2016-10-01.html Vendor Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.2 Release Notes Vendor Advisory
http://www.securityfocus.com/bid/93304 Third Party Advisory VDB Entry
https://bugzilla.novell.com/show_bug.cgi?id=1003077 Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1382268 Issue Tracking Third Party Advisory
https://github.com/torvalds/linux/commit/34b88a68f26a75e4fded796f1a49c40f82234b7d Issue Tracking Patch Third Party Advisory
https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-7117.html Issue Tracking Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2016-7117 Issue Tracking Third Party Advisory
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