CVE-2021-47620

Aliases:UBUNTU-CVE-2021-47620DEBIAN-CVE-2021-47620
Advisory lineage Upstream: 0 Downstream: 10
Modified
Published: 20 Jun 2024, 11:08
Last modified:05 Aug 2026, 08:48

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
8.1 HIGH
v3.1 (cve.org)
EPSS Score
0.32% LOW
0% probability +0.29%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 Jun 2024, 11:08
Published
Vulnerability first disclosed
05 Aug 2026, 08:48
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: refactor malicious adv data check Check for out-of-bound read was being performed at the end of while num_reports loop, and would fill journal with false positives. Added check to beginning of loop processing so that it doesn't get checked after ptr has been advanced.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
  • v3.1•HIGH•Score: 8.1CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Trends

Current EPSS score: 0.32%• Percentile: 26%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

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

Affected Systems

  • debian•linux

    < 5.10.103-1 | < 5.16.7-1 | < 5.16.7-1 | < 5.16.7-1

  • ubuntu•linux

    all | < 4.15.0-173.182 | < 5.4.0-107.121

  • ubuntu•linux-allwinner-5.19

    all

  • ubuntu•linux-aws

    all | < 4.15.0-1126.135 | < 5.4.0-1071.76

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.19

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1071.76~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-6.2

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2065.68 | all | < 5.4.0-1071.76+fips1

  • ubuntu•linux-aws-hwe

    < 4.15.0-1126.135~16.04.2

  • ubuntu•linux-azure

    < 4.15.0-1136.149~14.04.1 | < 4.15.0-1136.149~16.04.1 | all | < 5.4.0-1074.77

  • ubuntu•linux-azure-4.15

    < 4.15.0-1136.149

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.19

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1074.77~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-6.2

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fde-5.15

    < 5.15.0-1114.123~20.04.1

  • ubuntu•linux-azure-fde-5.19

    all

  • ubuntu•linux-azure-fde-6.2

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2047.51 | all | < 5.4.0-1074.77+fips1

  • ubuntu•linux-bluefield

    all | < 5.4.0-1032.35

  • ubuntu•linux-fips

    all | < 4.15.0-1083.92 | < 5.4.0-1047.53

  • ubuntu•linux-gcp

    < 4.15.0-1120.134~16.04.1 | all | < 5.4.0-1069.73

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1120.134

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    all

  • ubuntu•linux-gcp-5.19

    all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1069.73~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-6.2

    all

  • ubuntu•linux-gcp-fips

    < 4.15.0-2030.33 | all | < 5.4.0-1069.73+fips2

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.15

    all

  • ubuntu•linux-gke-5.4

    all

  • ubuntu•linux-gkeop

    < 5.4.0-1038.39

  • ubuntu•linux-gkeop-5.4

    all

  • ubuntu•linux-hwe

    < 4.15.0-173.182~16.04.1 | all

  • ubuntu•linux-hwe-5.11

    all

  • ubuntu•linux-hwe-5.13

    all

Showing first 50 affected entries in server-rendered view.

References (13)