CVE-2021-47257 net: ieee802154: fix null deref in parse dev addr
Medium 5.5
Published
Updated
Check this codebase for CVE-2021-47257 and fix it if it is affected.
What it is: CVE-2021-47257 is a medium-severity vulnerability in Linux kernel, published on 21 May 2024.
Exploitation: There is no known exploitation of CVE-2021-47257 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-2021-47257/ (Markdown: https://insights.sbomify.com/CVE-2021-47257/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2021-47257?
CVE-2021-47257 is a medium-severity vulnerability in Linux kernel, published on 21 May 2024.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net: ieee802154: fix null deref in parse dev addr
Fix a logic error that could result in a null deref if the user sets the mode incorrectly for the given addr type.
Weakness: CWE-476
Which versions are affected by CVE-2021-47257?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2021-47257?
Upgrade to a fixed version.
Is CVE-2021-47257 being exploited?
There is no known exploitation of CVE-2021-47257 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2021-47257, GHSA-33w7-r9c3-9qwq, UBUNTU-CVE-2021-47257.