CVE-2018-5843 Memory corruption in Android for MSM, Firefox OS for MSM, QRD Android
A missing bounds check in the Qualcomm Android kernel allows firmware to trigger a buffer overwrite, potentially enabling code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-5843?
CVE-2018-5843 is a high-severity memory corruption vulnerability in Google Android, published on 12 Jun 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the function wma_pdev_div_info_evt_handler() in all Android releases from CAF (Android for MSM, Firefox OS for MSM, QRD Android) using the Linux Kernel, there is no upper bound check on the value event->num_chains_valid received from firmware which can lead to a buffer overwrite of the fixed size chain_rssi_result structure.
Weakness: CWE-119
Which versions are affected by CVE-2018-5843?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2018-5843?
No fix has been published for CVE-2018-5843 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-5843 being exploited?
There is no known exploitation of CVE-2018-5843 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as GHSA-phcw-5h5w-hwxw.