CVE-2021-33655

Aliases:UBUNTU-CVE-2021-33655DEBIAN-CVE-2021-33655
Advisory lineage Upstream: 0 Downstream: 55
Modified
Published: 18 Jul 2022, 14:45
Last modified:03 Aug 2024, 23:58

Vulnerability Summary

Overall Risk (default)
medium
27/100
CVSS Score
6.7 MEDIUM
v3.1 (nvd)
EPSS Score
0.32% LOW
0% probability +0.29%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Jul 2022, 14:45
Published
Vulnerability first disclosed
03 Aug 2024, 23:58
Last Modified
Vulnerability information updated

Description

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

CVSS Metrics

  • v4.0•HIGH•Score: 7.3CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • v3.1•MEDIUM•Score: 6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.32%• Percentile: 25%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • debian•linux

    < 5.10.127-2 | < 5.18.14-1 | < 5.18.14-1 | < 5.18.14-1

  • ubuntu•linux

    all | < 4.4.0-234.268 | < 4.15.0-193.204 | < 5.4.0-126.142 | < 5.15.0-48.54

  • ubuntu•linux-aws

    < 4.4.0-1113.119 | < 4.4.0-1150.165 | < 4.15.0-1141.152 | < 5.4.0-1085.92 | < 5.15.0-1020.24

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.15

    < 5.15.0-1020.24~20.04.1

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1085.92~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2080.85 | all | < 5.4.0-1085.92+fips1

  • ubuntu•linux-aws-hwe

    < 4.15.0-1141.152~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1151.166~14.04.1 | < 4.15.0-1151.166~16.04.1 | all | < 5.4.0-1091.96 | < 5.15.0-1020.25

  • ubuntu•linux-azure-4.15

    < 4.15.0-1151.166

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.15

    < 5.15.0-1020.25~20.04.1

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1091.96~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    < 5.15.0-1024.30.1

  • ubuntu•linux-azure-fde-5.15

    < 5.15.0-1114.123~20.04.1

  • ubuntu•linux-azure-fips

    < 4.15.0-2062.68 | all | < 5.4.0-1091.96+fips1

  • ubuntu•linux-bluefield

    all | < 5.4.0-1046.51

  • ubuntu•linux-dell300x

    < 4.15.0-1053.58

  • ubuntu•linux-fips

    < 4.4.0-1083.90 | all | < 4.15.0-1098.109 | < 5.4.0-1061.69

  • ubuntu•linux-gcp

    < 4.15.0-1136.152~16.04.1 | all | < 5.4.0-1089.97 | < 5.15.0-1018.24

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1136.152

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    all

  • ubuntu•linux-gcp-5.15

    < 5.15.0-1018.24~20.04.1

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1089.97~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-fips

    < 4.15.0-2045.50 | all | < 5.4.0-1089.97+fips1

  • ubuntu•linux-gke

    < 5.4.0-1083.89 | < 5.15.0-1016.19

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.15

    < 5.15.0-1016.19~20.04.1

  • ubuntu•linux-gke-5.4

    all

  • ubuntu•linux-gkeop

    < 5.4.0-1053.56 | < 5.15.0-1003.5

  • ubuntu•linux-gkeop-5.4

    all

  • ubuntu•linux-hwe

    < 4.15.0-193.204~16.04.1 | all

  • ubuntu•linux-hwe-5.11

    all

  • ubuntu•linux-hwe-5.13

    all

  • ubuntu•linux-hwe-5.15

    < 5.15.0-48.54~20.04.1

  • ubuntu•linux-hwe-5.4

    < 5.4.0-126.142~18.04.1

  • ubuntu•linux-hwe-5.8

    all

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-ibm

    < 5.4.0-1033.37 | < 5.15.0-1015.17

Showing first 50 affected entries in server-rendered view.

References (28)