A Samsung spokesperson has responded to Android Central on its plans to fix the recently revealed Exynos Kernel vulnerability issue. According to the Android Central, the company is aware of the problem and it is moving in right direction with the software updates to solve the problem "as quickly as possible". According to Samsung, they already knew about this vulnerability and a specifically coded app is required to exploit this vulnerability.
Here's the exact statement given by Samsung.
The exploit, which was discovered some days back, could give a malicious app full control over the physical memory (RAM) of the effected device. As the exploit is based on Samsung Exynos 4 series processor which are the base of popular devices such as Samsung Galaxy Note 2, Samsung Galaxy S3 and Samsung Galaxy S2, whose sale is recorded to be tens of millions, a quick response from Samsung was expected.
If you can't wait for Samsung to release an update to curb the issue, you can have a look at the third-party apps which partially fix the issue. You can know in detail about the issue and its fix by clicking here.