CVE-2021-22555: Linux Kernel Heap Out-of-Bounds Write Vulnerability

#linux #kernel #cybersecurity #vulnerability

CVE ID

CVE-2021-22555

Vulnerability Name

Linux Kernel Heap Out-of-Bounds Write Vulnerability

Project: Linux
Product: Kernel

Date

Date Added: 2025-10-06
Due Date: 2025-10-27

Description

Linux Kernel contains a heap out-of-bounds write vulnerability that could allow an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space.

Known To Be Used in Ransomware Campaigns?

Unknown

Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.