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Unscored USN-4945-1 7 CVEs

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 vulnerabilities

Published May 11, 2021 · Updated Jun 3, 2026

Summary

It was discovered that the Nouveau GPU driver in the Linux kernel did not
properly handle error conditions in some situations. A local attacker could
use this to cause a denial of service (system crash). (CVE-2020-25639)

Jan Beulich discovered that the Xen netback backend in the Linux kernel did
not properly handle certain error conditions under paravirtualization. An
attacker in a guest VM could possibly use this to cause a denial of service
(host domain crash). (CVE-2021-28038)

It was discovered that the fastrpc driver in the Linux kernel did not
prevent user space applications from sending kernel RPC messages. A local
attacker could possibly use this to gain elevated privileges.
(CVE-2021-28375)

It was discovered that the Realtek RTL8188EU Wireless device driver in the
Linux kernel did not properly validate ssid lengths in some situations. An
attacker could use this to cause a denial of service (system crash).
(CVE-2021-28660)

It was discovered that the USB/IP driver in the Linux kernel contained race
conditions during the update of local and shared status. An attacker could
use this to cause a denial of service (system crash). (CVE-2021-29265)

It was discovered that a race condition existed in the netfilter subsystem
of the Linux kernel when replacing tables. A local attacker could use this
to cause a denial of service (system crash). (CVE-2021-29650)

Arnd Bergmann discovered that the video4linux subsystem in the Linux kernel
did not properly deallocate memory in some situations. A local attacker
could use this to cause a denial of service (memory exhaustion).
(CVE-2021-30002)

Fixed packages 15

ReleasePackageFixed in
Ubuntu · 18.04 LTS 18.04:LTS linux-aws-5.4 5.4.0-1048.50~18.04.1
Ubuntu · 18.04 LTS 18.04:LTS linux-azure-5.4 5.4.0-1047.49~18.04.1
Ubuntu · 18.04 LTS 18.04:LTS linux-gcp-5.4 5.4.0-1043.46~18.04.1
Ubuntu · 18.04 LTS 18.04:LTS linux-gke-5.4 5.4.0-1043.45~18.04.1
Ubuntu · 18.04 LTS 18.04:LTS linux-gkeop-5.4 5.4.0-1015.16~18.04.1
Ubuntu · 18.04 LTS 18.04:LTS linux-hwe-5.4 5.4.0-73.82~18.04.1
Ubuntu · 18.04 LTS 18.04:LTS linux-oracle-5.4 5.4.0-1044.47~18.04.1
Ubuntu · 20.04 LTS 20.04:LTS linux 5.4.0-73.82
Ubuntu · 20.04 LTS 20.04:LTS linux-aws 5.4.0-1048.50
Ubuntu · 20.04 LTS 20.04:LTS linux-azure 5.4.0-1047.49
Ubuntu · 20.04 LTS 20.04:LTS linux-gcp 5.4.0-1043.46
Ubuntu · 20.04 LTS 20.04:LTS linux-gke 5.4.0-1043.45
Ubuntu · 20.04 LTS 20.04:LTS linux-gkeop 5.4.0-1015.16
Ubuntu · 20.04 LTS 20.04:LTS linux-kvm 5.4.0-1039.40
Ubuntu · 20.04 LTS 20.04:LTS linux-oracle 5.4.0-1045.49

Vulnerabilities 7

References

  • report
    https://ubuntu.com/security/CVE-2020-25639
  • report
    https://ubuntu.com/security/CVE-2021-28038
  • report
    https://ubuntu.com/security/CVE-2021-28375
  • report
    https://ubuntu.com/security/CVE-2021-28660
  • report
    https://ubuntu.com/security/CVE-2021-29265
  • report
    https://ubuntu.com/security/CVE-2021-29650
  • report
    https://ubuntu.com/security/CVE-2021-30002