CVE-2021-22556

MEDIUM

Fuchsia < 4.1 - Integer Overflow in Memory Cache Invalidation

Title source: llm

Description

The Security Team discovered an integer overflow bug that allows an attacker with code execution to issue memory cache invalidation operations on pages that they don’t own, allowing them to control kernel memory from userspace. We recommend upgrading to kernel version 4.1 or beyond.

References (2)

Core 2

Core References

Release Notes, Vendor Advisory x_refsource_misc

https://fuchsia.dev/whats-new/release-notes/f4-1

Issue Tracking, Patch, Third Party Advisory x_refsource_misc

https://fuchsia-review.googlesource.com/c/fuchsia/+/570881

Scores

CVSS v3 5.3

EPSS 0.0015

EPSS Percentile 4.9%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-190

Status published

Products (1)

google/fuchsia < 4.1

Published May 03, 2022

Tracked Since Feb 18, 2026