CVE-2016-9840 Memory corruption in n/a
High 8.8
Published
Updated
Check this codebase for CVE-2016-9840 and fix it if it is affected.
What it is: CVE-2016-9840 is a high-severity memory corruption vulnerability in Apple Iphone Os, published on 23 May 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2016-9840 in the wild and no public exploit code.
Affected product: Apple Iphone Os. 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-2016-9840/ (Markdown: https://insights.sbomify.com/CVE-2016-9840/index.md)
Improper pointer arithmetic in zlib may allow attackers to cause unspecified impacts, requiring library updates.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2016-9840?
CVE-2016-9840 is a high-severity memory corruption vulnerability in Apple Iphone Os, published on 23 May 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
inftrees.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.
Which versions are affected by CVE-2016-9840?
It affects 20 products.
Linux distribution packages (40)
rsync AlmaLinux:8 | All versions | 3.1.3-23.el8_10 |
rsync-daemon AlmaLinux:8 | All versions | 3.1.3-23.el8_10 |
rsync Red Hat:enterprise_linux:8::baseos | All versions | 0:3.1.3-23.el8_10 |
rsync-daemon Red Hat:enterprise_linux:8::baseos | All versions | 0:3.1.3-23.el8_10 |
rsync-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:3.1.3-23.el8_10 |
rsync-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:3.1.3-23.el8_10 |
rsync Red Hat:rhel_aus:8.2::baseos | All versions | 0:3.1.3-7.el8_2.5 |
rsync-daemon Red Hat:rhel_aus:8.2::baseos | All versions | 0:3.1.3-7.el8_2.5 |
rsync-debuginfo Red Hat:rhel_aus:8.2::baseos | All versions | 0:3.1.3-7.el8_2.5 |
rsync-debugsource Red Hat:rhel_aus:8.2::baseos | All versions | 0:3.1.3-7.el8_2.5 |
rsync Red Hat:rhel_aus:8.4::baseos | All versions | 0:3.1.3-12.el8_4.5 |
rsync-daemon Red Hat:rhel_aus:8.4::baseos | All versions | 0:3.1.3-12.el8_4.5 |
rsync-debuginfo Red Hat:rhel_aus:8.4::baseos | All versions | 0:3.1.3-12.el8_4.5 |
rsync-debugsource Red Hat:rhel_aus:8.4::baseos | All versions | 0:3.1.3-12.el8_4.5 |
rsync Red Hat:rhel_aus:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync-daemon Red Hat:rhel_aus:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync-debuginfo Red Hat:rhel_aus:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync-debugsource Red Hat:rhel_aus:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync Red Hat:rhel_e4s:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync-daemon Red Hat:rhel_e4s:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync-debuginfo Red Hat:rhel_e4s:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync-debugsource Red Hat:rhel_e4s:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync Red Hat:rhel_e4s:8.8::baseos | All versions | 0:3.1.3-20.el8_8.3 |
rsync-daemon Red Hat:rhel_e4s:8.8::baseos | All versions | 0:3.1.3-20.el8_8.3 |
rsync-debuginfo Red Hat:rhel_e4s:8.8::baseos | All versions | 0:3.1.3-20.el8_8.3 |
rsync-debugsource Red Hat:rhel_e4s:8.8::baseos | All versions | 0:3.1.3-20.el8_8.3 |
minizip Red Hat:rhel_els:7 | All versions | 0:1.2.7-21.el7_9.1 |
minizip-devel Red Hat:rhel_els:7 | All versions | 0:1.2.7-21.el7_9.1 |
zlib Red Hat:rhel_els:7 | All versions | 0:1.2.7-21.el7_9.1 |
zlib-debuginfo Red Hat:rhel_els:7 | All versions | 0:1.2.7-21.el7_9.1 |
zlib-devel Red Hat:rhel_els:7 | All versions | 0:1.2.7-21.el7_9.1 |
zlib-static Red Hat:rhel_els:7 | All versions | 0:1.2.7-21.el7_9.1 |
rsync Red Hat:rhel_tus:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync-daemon Red Hat:rhel_tus:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync-debuginfo Red Hat:rhel_tus:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync-debugsource Red Hat:rhel_tus:8.6::baseos | All versions | 0:3.1.3-14.el8_6.8 |
rsync Red Hat:rhel_tus:8.8::baseos | All versions | 0:3.1.3-20.el8_8.3 |
rsync-daemon Red Hat:rhel_tus:8.8::baseos | All versions | 0:3.1.3-20.el8_8.3 |
rsync-debuginfo Red Hat:rhel_tus:8.8::baseos | All versions | 0:3.1.3-20.el8_8.3 |
rsync-debugsource Red Hat:rhel_tus:8.8::baseos | All versions | 0:3.1.3-20.el8_8.3 |
Products include Apple Iphone Os, Apple Mac Os X, Apple Tvos, Apple Watchos, Boost Boost, Canonical Ubuntu Linux and 14 more.
How do I fix CVE-2016-9840?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2016-9840 being exploited?
There is no known exploitation of CVE-2016-9840 in the wild and no public exploit code.
Other vulnerabilities in Apple Iphone Os
Sources
Also known as ALPINE-CVE-2016-9840, ALSA-2025:8395, AZL-44046, AZL-45132, CLSA-2025-1749825355, CLSA-2025-1749826078 and 21 more.