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CVE-2021-22555

KEV

Linux Kernel Heap Out-of-Bounds Write Vulnerability

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Vendor / Project
Linux
Product
Kernel
Date added
Oct 6, 2025
Due date
Oct 27, 2025
Known ransomware use
Unknown
CWEs
CWE-787

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.

Required 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.

Notes