CVE-2021-22543 vulnerability in Linux and Other Products
Published on May 26, 2021
Improper memory handling in Linux KVM
An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation.
Weakness Type
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2021-22543 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2021-22543
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-22543 are published in these products:
Affected Versions
Linux Kernel:- Version add6a0cd1c5ba51b201e1361b05a5df817083618 and below f8be156be163a052a067306417cd0ff679068c97 is affected.
Exploit Probability
EPSS
0.01%
Percentile
0.23%
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.