CVE-2016-7117 Use after free in n/a
Critical 9.8
Published
Updated
Check this codebase for CVE-2016-7117 and fix it if it is affected.
What it is: CVE-2016-7117 is a critical use after free vulnerability in Canonical Ubuntu Linux, published on 10 Oct 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2016-7117 in the wild and no public exploit code.
Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2016-7117/ (Markdown: https://insights.sbomify.com/CVE-2016-7117/index.md)
Remote attackers can execute arbitrary code via a use-after-free vulnerability in the Linux kernel's recvmmsg system call error handling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-7117?
CVE-2016-7117 is a critical use after free vulnerability in Canonical Ubuntu Linux, published on 10 Oct 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-19
Which versions are affected by CVE-2016-7117?
It affects 3 products.
Linux distribution packages (40)
kernel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-PAE Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-PAE-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-PAE-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-debug Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-debug-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-debug-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-debuginfo-common Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-doc Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-headers Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-xen Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-xen-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel-xen-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-417.el5 |
kernel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-PAE Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-PAE-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-PAE-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-debug Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-debug-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-debug-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-debuginfo-common Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-doc Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-headers Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-kdump Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-kdump-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-kdump-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-xen Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-xen-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel-xen-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-417.el5 |
kernel Red Hat:rhel_aus:6.4::server | All versions | 0:2.6.32-358.76.1.el6 |
kernel-debug Red Hat:rhel_aus:6.4::server | All versions | 0:2.6.32-358.76.1.el6 |
kernel-debug-debuginfo Red Hat:rhel_aus:6.4::server | All versions | 0:2.6.32-358.76.1.el6 |
kernel-debug-devel Red Hat:rhel_aus:6.4::server | All versions | 0:2.6.32-358.76.1.el6 |
kernel-debuginfo Red Hat:rhel_aus:6.4::server | All versions | 0:2.6.32-358.76.1.el6 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_aus:6.4::server | All versions | 0:2.6.32-358.76.1.el6 |
kernel-devel Red Hat:rhel_aus:6.4::server | All versions | 0:2.6.32-358.76.1.el6 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel.
How do I fix CVE-2016-7117?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2016-7117 being exploited?
There is no known exploitation of CVE-2016-7117 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2016-7117, GHSA-ggx5-r43p-75wm, RHSA-2016:2962, RHSA-2017:0031, RHSA-2017:0065, RHSA-2017:0196 and 4 more.