Imagination Technologies · Pvrsrvkm.Ko · CVE-2021-31795
**Name of the Vulnerable Software and Affected Versions**
PowerVR GPU kernel driver versions through 2021-04-24
**Description**
The issue allows attackers to overwrite heap memory via `PhysmemNewRamBackedPMR`. This affects the PowerVR GPU kernel driver in pvrsrvkm.ko for the Linux kernel, as used on Alcatel 1S phones.
**Recommendations**
For versions through 2021-04-24, consider disabling the `PhysmemNewRamBackedPMR` function as a temporary workaround until a patch is available.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.