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Unscored USN-5014-1 1 CVE

linux, linux-aws, linux-azure, linux-gcp, linux-gke-5.3, linux-hwe, linux-lts-xenial, linux-kvm, linux-oracle, linux-raspi, linux-raspi2-5.3 vulnerability

Published Jul 20, 2021 · Updated Jun 29, 2026

Ecosystem: Ubuntu

Summary

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.

Fixed packages 9

ReleasePackageFixed in
Ubuntu · 18.04 LTS 18.04:LTS linux-gke-5.3 5.3.0-1045.48
Ubuntu · 18.04 LTS 18.04:LTS linux-hwe 5.3.0-76.72
Ubuntu · 18.04 LTS 18.04:LTS linux-raspi2-5.3 5.3.0-1042.44
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS linux 3.13.0-186.237
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS linux-aws 4.4.0-1094.99
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS linux-lts-xenial 4.4.0-212.244~14.04.1
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS linux 4.4.0-212.244
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS linux-aws 4.4.0-1130.144
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS linux-kvm 4.4.0-1095.104

Vulnerabilities 1

References

  • report
    https://ubuntu.com/security/CVE-2021-33909