CVE-2021-22556

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 v3 5.3 MEDIUM
CVSS v2.0 4.6 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://fuchsia-review.googlesource.com/c/fuchsia/+/570881	Issue Tracking Patch Third Party Advisory
https://fuchsia.dev/whats-new/release-notes/f4-1	Release Notes Vendor Advisory
https://fuchsia-review.googlesource.com/c/fuchsia/+/570881	Issue Tracking Patch Third Party Advisory
https://fuchsia.dev/whats-new/release-notes/f4-1	Release Notes Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:google:fuchsia:*:*:*:*:*:*:*:*

History

21 Nov 2024, 05:50

Type	Values Removed	Values Added
CVSS	v2 : ~~4.6~~ v3 : ~~7.8~~	v2 : 4.6 v3 : 5.3
References	~~() https://fuchsia-review.googlesource.com/c/fuchsia/+/570881 - Issue Tracking, Patch, Third Party Advisory~~	() https://fuchsia-review.googlesource.com/c/fuchsia/+/570881 - Issue Tracking, Patch, Third Party Advisory
References	~~() https://fuchsia.dev/whats-new/release-notes/f4-1 - Release Notes, Vendor Advisory~~	() https://fuchsia.dev/whats-new/release-notes/f4-1 - Release Notes, Vendor Advisory

Information

Published : 2022-05-03 16:15

Updated : 2024-11-21 05:50

NVD link : CVE-2021-22556

Mitre link : CVE-2021-22556

CVE.ORG link : CVE-2021-22556

JSON object : View

Products Affected

google

fuchsia

CWE

CWE-190

Integer Overflow or Wraparound

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