CVE-2020-36558 Race condition in n/a
Medium 5.1
Published
Updated
Check this codebase for CVE-2020-36558 and fix it if it is affected.
What it is: CVE-2020-36558 is a medium-severity vulnerability in Linux kernel, published on 21 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-36558 in the wild and no public exploit code.
Affected product: Linux kernel. 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-2020-36558/ (Markdown: https://insights.sbomify.com/CVE-2020-36558/index.md)
A race condition in the Linux kernel VT_RESIZEX handler causes a NULL pointer dereference, leading to a system crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-36558?
CVE-2020-36558 is a medium-severity vulnerability in Linux kernel, published on 21 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A race condition in the Linux kernel before 5.5.7 involving VT_RESIZEX could lead to a NULL pointer dereference and general protection fault.
Which versions are affected by CVE-2020-36558?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2020-36558?
Upgrade to a fixed version.
Is CVE-2020-36558 being exploited?
There is no known exploitation of CVE-2020-36558 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2020-36558, GHSA-jhg9-9m4g-q544, UBUNTU-CVE-2020-36558.