CVE-2021-22556

Integer Overflow in Fuchsia Kernel

Published May 3, 2022 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-9697 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Google
Published
Updated
Apr 21, 2025, 1:54 PM
Reserved
Jan 5, 2021, 12:00 AM
Status
Modified
Published
May 3, 2022, 4:15 PM
Modified
Jun 17, 2026, 3:37 AM