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ubuntucveUbuntu.comUB:CVE-2021-33655
HistoryJul 18, 2022 - 12:00 a.m.

CVE-2021-33655

2022-07-1800:00:00
ubuntu.com
ubuntu.com
27

6.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

4 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

MULTIPLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.3%

JSON

When sending malicous data to kernel by ioctl cmd
FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-193.204UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-126.142UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-48.54UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-234.268) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1141.152UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1085.92UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1020.24UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1113.119) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1150.165) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu20.04noarchlinux-aws-5.15< 5.15.0-1020.24~20.04.1UNKNOWN
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6.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

4 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

MULTIPLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.3%

JSON
Related for UB:CVE-2021-33655
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