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CVE-2021-22556

Integer Overflow in Fuchsia Kernel

Published: May 3, 2022Updated: Nov 21, 2024 Sources: CVE List NVDCWE-190
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.2%
Top 95.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:HI:LA:N
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-190

Affected Products

Fuchsia KernelGoogle LLC
Mixed
OSS Libraries / generic-library
fuchsiagoogle
On-prem
Mobile Apps / android-app
google llccommercialUSOSS Libraries
googlecommercialUSMobile Appsaka google inc, google llc

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
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References

https://fuchsia.dev/whats-new/release-notes/f4-1
fuchsia.dev
https://fuchsia-review.googlesource.com/c/fuchsia/+/570881
fuchsia-review.googlesource.com

Timeline

Published
May 3, 2022
Last Updated
Nov 21, 2024

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