CVE-2021-39535 Null dereference in n/a
Medium 6.5
Published
Updated
Check this codebase for CVE-2021-39535 and fix it if it is affected.
What it is: CVE-2021-39535 is a medium-severity vulnerability in n/a, published on 20 Sep 2021. 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-2021-39535 in the wild and no public exploit code.
Affected product: n/a. 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-2021-39535/ (Markdown: https://insights.sbomify.com/CVE-2021-39535/index.md)
A NULL pointer dereference in libxsmm JIT code allows attackers to cause a Denial of Service.
- 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-2021-39535?
CVE-2021-39535 is a medium-severity vulnerability in n/a, published on 20 Sep 2021. 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
An issue was discovered in libxsmm through v1.16.1-93. A NULL pointer dereference exists in JIT code. It allows an attacker to cause Denial of Service.
Weakness: CWE-476
Which versions are affected by CVE-2021-39535?
It affects 1 product.
Products include Libxsmm Project Libxsmm.
How do I fix CVE-2021-39535?
Upgrade to a fixed version.
Is CVE-2021-39535 being exploited?
There is no known exploitation of CVE-2021-39535 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2021-39535, GHSA-g9r6-qhfx-9xcc.