USN-5045-1

Advisory lineage Upstream: 8 Downstream: 0
Published: 18 Aug 2021, 22:17
Last modified:03 Jun 2026, 14:03

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Aug 2021, 22:17
Published
Vulnerability first disclosed
03 Jun 2026, 14:03
Last Modified
Vulnerability information updated

Description

linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities Norbert Slusarek discovered that the CAN broadcast manger (bcm) protocol implementation in the Linux kernel did not properly initialize memory in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-34693) It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle HCI device initialization failure, leading to a double-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-3564) It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle HCI device detach events, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-3573) It was discovered that the NFC implementation in the Linux kernel did not properly handle failed connect events leading to a NULL pointer dereference. A local attacker could use this to cause a denial of service. (CVE-2021-3587)

Affected Systems

  • ubuntu•linux

    < 5.4.0-81.91

  • ubuntu•linux-aws

    < 5.4.0-1055.58

  • ubuntu•linux-aws-5.4

    < 5.4.0-1055.58~18.04.1

  • ubuntu•linux-azure

    < 5.4.0-1056.58

  • ubuntu•linux-azure-5.4

    < 5.4.0-1056.58~18.04.1

  • ubuntu•linux-gcp

    < 5.4.0-1051.55

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1051.55~18.04.1

  • ubuntu•linux-gke

    < 5.4.0-1051.54

  • ubuntu•linux-gke-5.4

    < 5.4.0-1051.54~18.04.1

  • ubuntu•linux-gkeop

    < 5.4.0-1022.23

  • ubuntu•linux-gkeop-5.4

    < 5.4.0-1022.23~18.04.1

  • ubuntu•linux-hwe-5.4

    < 5.4.0-81.91~18.04.1

  • ubuntu•linux-kvm

    < 5.4.0-1045.47

  • ubuntu•linux-oracle

    < 5.4.0-1053.57

  • ubuntu•linux-oracle-5.4

    < 5.4.0-1053.57~18.04.1

  • ubuntu•linux-raspi

    < 5.4.0-1042.46

  • ubuntu•linux-raspi-5.4

    < 5.4.0-1042.46~18.04.3

References (5)