linux linux-kernel CVE-2021-4203 vulnerability in Linux and Other Products
Published on March 25, 2022

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A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.

NVD

Weakness Type

What is a Race Condition Vulnerability?

The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

CVE-2021-4203 has been classified to as a Race Condition vulnerability or weakness.


Products Associated with CVE-2021-4203

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-4203 are published in these products:

Linux Kernel
 
NetApp Element Software
 
NetApp Solidfire
 
NetApp Hci Management Node
 
NetApp Active Iq Unified Manager
 
NetApp E Series Santricity Os Controller
 
Oracle Communications Cloud Native Core Binding Support Function
 
Oracle Communications Cloud Native Core Policy
 
Oracle Communications Cloud Native Core Network Exposure Function
 
Canonical Ubuntu Linux
 

Exploit Probability

EPSS
0.07%
Percentile
20.33%

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.