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[email protected]NVD:CVE-2021-22556

HistoryMay 03, 2022 - 4:15 p.m.

CVE-2021-22556

2022-05-0316:15:18

CWE-190

[email protected]

web.nvd.nist.gov

security team

integer overflow bug

code execution

kernel memory

userspace

memory cache invalidation

kernel version 4.1

upgrade

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

Percentile

14.2%

JSON

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.

Affected configurations

Nvd

Node

googlefuchsiaRange<4.1

VendorProductVersionCPE
googlefuchsia*cpe:2.3:o:google:fuchsia:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
google	fuchsia	*	cpe:2.3:o:google:fuchsia::::::::

References

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

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

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

Percentile

14.2%

JSON

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