UBUNTU-CVE-2021-3743

Advisory lineage Upstream: 1 Downstream: 6
Upstream
CVE-2021-3743
Published: 25 Aug 2021, 00:00
Last modified:04 Jul 2026, 19:19

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 Aug 2021, 00:00
Published
Vulnerability first disclosed
04 Jul 2026, 19:19
Last Modified
Vulnerability information updated

Description

An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected Systems

  • ubuntu•linux

    < 4.15.0-162.170 | < 5.4.0-90.101

  • ubuntu•linux-aws

    < 4.15.0-1115.122 | < 5.4.0-1059.62

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    < 5.11.0-1020.21~20.04.2

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1059.62~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2056.58 | all | < 5.4.0-1069.73+fips2

  • ubuntu•linux-aws-hwe

    < 4.15.0-1115.122~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1126.139~14.04.1 | < 4.15.0-1126.139~16.04.1 | all | < 5.4.0-1063.66

  • ubuntu•linux-azure-4.15

    < 4.15.0-1126.139

  • ubuntu•linux-azure-5.11

    < 5.11.0-1020.21~20.04.1

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1063.66~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2038.42 | all | < 5.4.0-1073.76+fips1

  • ubuntu•linux-bluefield

    < 5.4.0-1021.24 | all

  • ubuntu•linux-dell300x

    < 4.15.0-1030.35

  • ubuntu•linux-fips

    < 4.15.0-1072.81 | all | < 5.4.0-1036.42

  • ubuntu•linux-gcp

    < 4.15.0-1111.125~16.04.1 | all | < 5.4.0-1057.61

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1111.125

  • ubuntu•linux-gcp-5.11

    < 5.11.0-1021.23~20.04.1

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1057.61~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    < 4.15.0-2021.23 | all | < 5.4.0-1067.71~20.04.1

  • ubuntu•linux-gke

    < 5.4.0-1055.58

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.4

    < 5.4.0-1055.58~18.04.1

  • ubuntu•linux-gkeop

    < 5.4.0-1026.27

  • ubuntu•linux-gkeop-5.4

    < 5.4.0-1026.27~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-162.170~16.04.1 | all

  • ubuntu•linux-hwe-5.11

    < 5.11.0-38.42~20.04.1

  • ubuntu•linux-hwe-5.4

    < 5.4.0-90.101~18.04.1

  • ubuntu•linux-hwe-5.8

    all

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-ibm

    < 5.4.0-1007.8

  • ubuntu•linux-intel-5.13

    all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.15.0-1102.104 | < 5.4.0-1049.51

  • ubuntu•linux-nvidia

    all

  • ubuntu•linux-nvidia-7.0

    all

  • ubuntu•linux-oem

    all

  • ubuntu•linux-oem-5.10

    < 5.10.0-1050.52

  • ubuntu•linux-oem-5.13

    < 5.13.0-1017.21

  • ubuntu•linux-oem-5.6

    all

  • ubuntu•linux-oracle

    < 4.15.0-1083.91~16.04.1 | < 4.15.0-1083.91 | < 5.4.0-1057.61

  • ubuntu•linux-oracle-5.0

    all

Showing first 50 affected entries in server-rendered view.

References (12)