CVE-2021-31795 Memory corruption in n/a
Attackers can overwrite heap memory in the PowerVR GPU kernel driver, potentially leading to code execution or privilege escalation on affected Linux devices.
- 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-2021-31795?
CVE-2021-31795 is a high-severity memory corruption vulnerability in n/a, published on 24 Apr 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The PowerVR GPU kernel driver in pvrsrvkm.ko through 2021-04-24 for the Linux kernel, as used on Alcatel 1S phones, allows attackers to overwrite heap memory via PhysmemNewRamBackedPMR.
Weakness: CWE-787
Which versions are affected by CVE-2021-31795?
It affects 1 product.
Products include Pvrsrvkm.ko Project Pvrsrvkm.ko.
How do I fix CVE-2021-31795?
No fix has been published for CVE-2021-31795 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-2021-31795 being exploited?
There is no known exploitation of CVE-2021-31795 in the wild and no public exploit code.
Sources
Also known as GHSA-fwhm-xh8g-8m5q.