Unscored LSN-0078-1 1 CVE

Kernel Live Patch Security Notice

Published Jul 19, 2021 · Updated Jun 3, 2026

Ecosystem: Ubuntu

Summary

Norbert Slusarek discovered a race condition in the CAN BCM networking
protocol of the Linux kernel leading to multiple use-after-free
vulnerabilities. A local attacker could use this issue to execute arbitrary
code.(CVE-2021-3609)

Fixed packages 11

Release	Package	Fixed in
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS	linux-hwe	4.15.0-147.151~16.04.1
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS	linux	4.15.0-147.151
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS	linux-gke-4.15	—
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS	linux-gke-5.4	5.4.0-1046.48~18.04.1
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS	linux-gkeop-5.4	5.4.0-1018.19~18.04.1
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS	linux-hwe-5.4	5.4.0-77.86~18.04.1
Ubuntu · Pro 18.04 LTS Pro:18.04:LTS	linux-oem	—
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS	linux	5.4.0-77.86
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS	linux-gcp	5.4.0-1046.49
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS	linux-gke	5.4.0-1046.48
Ubuntu · Pro 20.04 LTS Pro:20.04:LTS	linux-gkeop	5.4.0-1018.19

Vulnerabilities 1

Unscored —

CVE-2021-3609

.A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in th…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu

Mar 3, 2022

References

report
https://ubuntu.com/security/CVE-2021-3609