CVE-2021-3320 Type Confusion in 802154 ACK Frames Handling
Medium 5.9
Published
Updated
Check this codebase for CVE-2021-3320 and fix it if it is affected.
What it is: CVE-2021-3320 is a medium-severity vulnerability in Zephyrproject Zephyr, published on 24 May 2021.
Exploitation: There is no known exploitation of CVE-2021-3320 in the wild and no public exploit code.
Affected product: Zephyrproject Zephyr. 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-2021-3320/ (Markdown: https://insights.sbomify.com/CVE-2021-3320/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2021-3320?
CVE-2021-3320 is a medium-severity vulnerability in Zephyrproject Zephyr, published on 24 May 2021.
Official description
Type Confusion in 802154 ACK Frames Handling. Zephyr versions >= v2.4.0 contain NULL Pointer Dereference (CWE-476). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-27r3-rxch-2hm7
Which versions are affected by CVE-2021-3320?
It affects 1 product.
Products include Zephyrproject Zephyr.
How do I fix CVE-2021-3320?
No fix has been published for CVE-2021-3320 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-3320 being exploited?
There is no known exploitation of CVE-2021-3320 in the wild and no public exploit code.
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