CVE-2021-22556

Published: May 3, 2022

Modified: Apr 21, 2025

PUBLISHED

CVSS v3.1

5.3

MEDIUM

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.

Vendor	Product	Versions
Google LLC	Fuchsia Kernel	affected `unspecified - < 4.1`

Weaknesses (CWE)

CWE-190

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

References

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

x_refsource_MISC

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

x_refsource_MISC

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CVE-2021-22556

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References