CVE-2016-3841 Use after free in n/a
High 7.3
Published
Updated
Check this codebase for CVE-2016-3841 and fix it if it is affected.
What it is: CVE-2016-3841 is a high-severity use after free vulnerability in Google Android, published on 6 Aug 2016. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2016-3841 in the wild and no public exploit code.
Affected product: Google Android. 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-2016-3841/ (Markdown: https://insights.sbomify.com/CVE-2016-3841/index.md)
Local attackers can exploit a use-after-free in the Linux kernel IPv6 stack to gain privileges or crash the system via a crafted sendmsg call.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2016-3841?
CVE-2016-3841 is a high-severity use after free vulnerability in Google Android, published on 6 Aug 2016. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The IPv6 stack in the Linux kernel before 4.3.3 mishandles options data, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call.
Which versions are affected by CVE-2016-3841?
It affects 2 products.
Linux distribution packages (40)
kernel Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-abi-whitelists Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debug Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debug-debuginfo Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debug-devel Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debuginfo Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-devel Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-doc Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-headers Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-tools Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-tools-debuginfo Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-tools-libs Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel-tools-libs-devel Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
perf Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
perf-debuginfo Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
python-perf Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
python-perf-debuginfo Red Hat:rhel_eus:7.2::computenode | All versions | 0:3.10.0-327.41.3.el7 |
kernel Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-abi-whitelists Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-bootwrapper Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debug Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debug-debuginfo Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debug-devel Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debuginfo Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debuginfo-common-ppc64 Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debuginfo-common-ppc64le Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debuginfo-common-s390x Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-devel Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-doc Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-headers Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-kdump Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-kdump-debuginfo Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-kdump-devel Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-tools Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-tools-debuginfo Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-tools-libs Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
kernel-tools-libs-devel Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
perf Red Hat:rhel_eus:7.2::server | All versions | 0:3.10.0-327.41.3.el7 |
Products include Google Android, Linux kernel.
How do I fix CVE-2016-3841?
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-2016-3841 being exploited?
There is no known exploitation of CVE-2016-3841 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as DEBIAN-CVE-2016-3841, GHSA-2jwc-wqjh-543h, RHSA-2016:2695, UBUNTU-CVE-2016-3841.