FlawAtlas
Search the atlas
USN-5017-1 Not scored

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

It was discovered that the virtual file system implementation in the Linux kernel contained an unsigned to signed integer conversion error. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-33909) It was discovered that the bluetooth subsystem in the Linux kernel did not properly perform access control. An authenticated attacker could possibly use this to expose sensitive information. (CVE-2020-26558, CVE-2021-0129)

Exploit probability Not scored
Published July 20, 2021
Required by Not available
Last source change June 3, 2026

02 / AFFECTED SOFTWARE

Affected packages

Ubuntu:18.04:LTS linux-aws-5.4

21 explicit affected versions

Ubuntu:18.04:LTS linux-azure-5.4

20 explicit affected versions

Ubuntu:18.04:LTS linux-gcp-5.4

20 explicit affected versions

Ubuntu:18.04:LTS linux-gke-5.4

15 explicit affected versions

Ubuntu:18.04:LTS linux-gkeop-5.4

15 explicit affected versions

Ubuntu:18.04:LTS linux-hwe-5.4

26 explicit affected versions

Ubuntu:18.04:LTS linux-oracle-5.4

21 explicit affected versions

Ubuntu:18.04:LTS linux-raspi-5.4

19 explicit affected versions

Ubuntu:20.04:LTS linux

38 explicit affected versions

Ubuntu:20.04:LTS linux-aws

33 explicit affected versions

Ubuntu:20.04:LTS linux-azure

30 explicit affected versions

Ubuntu:20.04:LTS linux-gcp

30 explicit affected versions

Ubuntu:20.04:LTS linux-gke

10 explicit affected versions

Ubuntu:20.04:LTS linux-gkeop

10 explicit affected versions

Ubuntu:20.04:LTS linux-kvm

28 explicit affected versions

Ubuntu:20.04:LTS linux-oracle

31 explicit affected versions

Ubuntu:20.04:LTS linux-raspi

23 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities USN-5017-1

It was discovered that the virtual file system implementation in the Linux kernel contained an unsigned to signed integer conversion error. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-33909) It was discovered that the bluetooth subsystem in the Linux kernel did not properly perform access control. An authenticated attacker could possibly use this to expose sensitive information. (CVE-2020-26558, CVE-2021-0129)

View original source

05 / REFERENCES

Further evidence