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Medium USN-4413-1 5 CVEs

linux-gke-5.0, linux-oem-osp1 vulnerabilities

Published Jul 2, 2020 · Updated Jun 3, 2026

Summary

Matthew Sheets discovered that the SELinux network label handling
implementation in the Linux kernel could be coerced into de-referencing a
NULL pointer. A remote attacker could use this to cause a denial of service
(system crash). (CVE-2020-10711)

It was discovered that the SCSI generic (sg) driver in the Linux kernel did
not properly handle certain error conditions correctly. A local privileged
attacker could use this to cause a denial of service (system crash).
(CVE-2020-12770)

It was discovered that the USB Gadget device driver in the Linux kernel did
not validate arguments passed from configfs in some situations. A local
attacker could possibly use this to cause a denial of service (system
crash) or possibly expose sensitive information. (CVE-2020-13143)

Dmitry Vyukov discovered that the SELinux netlink security hook in the
Linux kernel did not validate messages in some situations. A privileged
attacker could use this to bypass SELinux netlink restrictions.
(CVE-2020-10751)

It was discovered that the KVM implementation in the Linux kernel did not
properly deallocate memory on initialization for some processors. A local
attacker could possibly use this to cause a denial of service.
(CVE-2020-12768)

Fixed packages 2

ReleasePackageFixed in
Ubuntu · 18.04 LTS 18.04:LTS linux-gke-5.0 5.0.0-1043.44
Ubuntu · 18.04 LTS 18.04:LTS linux-oem-osp1 5.0.0-1063.68

Vulnerabilities 5

References

  • report
    https://ubuntu.com/security/CVE-2020-10711
  • report
    https://ubuntu.com/security/CVE-2020-10751
  • report
    https://ubuntu.com/security/CVE-2020-12768
  • report
    https://ubuntu.com/security/CVE-2020-12770
  • report
    https://ubuntu.com/security/CVE-2020-13143