USN-6386-1

Advisory lineage Upstream: 8 Downstream: 0
Published: 19 Sept 2023, 21:52
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

19 Sept 2023, 21:52
Published
Vulnerability first disclosed
03 Jun 2026, 14:03
Last Modified
Vulnerability information updated

Description

linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-gkeop-5.15, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia vulnerabilities Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. (CVE-2023-20588) It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle L2CAP socket release, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-40283) It was discovered that some network classifier implementations in the Linux kernel contained use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4128) Lonial Con discovered that the netfilter subsystem in the Linux kernel contained a memory leak when handling certain element flush operations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2023-4569)

Affected Systems

  • ubuntu•linux

    < 5.15.0-84.93

  • ubuntu•linux-aws

    < 5.15.0-1045.50

  • ubuntu•linux-aws-5.15

    < 5.15.0-1045.50~20.04.1

  • ubuntu•linux-azure

    < 5.15.0-1047.54

  • ubuntu•linux-azure-5.15

    < 5.15.0-1047.54~20.04.1

  • ubuntu•linux-azure-fde

    < 5.15.0-1047.54.1

  • ubuntu•linux-azure-fde-5.15

    < 5.15.0-1047.54~20.04.1.1

  • ubuntu•linux-gcp

    < 5.15.0-1042.50

  • ubuntu•linux-gcp-5.15

    < 5.15.0-1042.50~20.04.1

  • ubuntu•linux-gke

    < 5.15.0-1042.47

  • ubuntu•linux-gkeop

    < 5.15.0-1028.33

  • ubuntu•linux-gkeop-5.15

    < 5.15.0-1028.33~20.04.1

  • ubuntu•linux-hwe-5.15

    < 5.15.0-84.93~20.04.1

  • ubuntu•linux-ibm

    < 5.15.0-1038.41

  • ubuntu•linux-ibm-5.15

    < 5.15.0-1038.41~20.04.1

  • ubuntu•linux-kvm

    < 5.15.0-1042.47

  • ubuntu•linux-lowlatency

    < 5.15.0-84.93

  • ubuntu•linux-lowlatency-hwe-5.15

    < 5.15.0-84.93~20.04.1

  • ubuntu•linux-nvidia

    < 5.15.0-1033.33

References (5)