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OpenAdvisories
Medium USN-4419-1 5 CVEs

linux, linux-lts-xenial, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities

Published Jul 6, 2020 · Updated Jun 3, 2026

Summary

It was discovered that a race condition existed in the Precision Time
Protocol (PTP) implementation in the Linux kernel, leading to a use-after-
free vulnerability. A local attacker could possibly use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2020-10690)

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)

Shijie Luo discovered that the ext4 file system implementation in the Linux
kernel did not properly check for a too-large journal size. An attacker
could use this to construct a malicious ext4 image that, when mounted,
could cause a denial of service (soft lockup). (CVE-2020-8992)

Fixed packages 7

ReleasePackageFixed in
Ubuntu · 16.04 LTS 16.04:LTS linux 4.4.0-185.215
Ubuntu · 16.04 LTS 16.04:LTS linux-aws 4.4.0-1110.121
Ubuntu · 16.04 LTS 16.04:LTS linux-kvm 4.4.0-1076.83
Ubuntu · 16.04 LTS 16.04:LTS linux-raspi2 4.4.0-1135.144
Ubuntu · 16.04 LTS 16.04:LTS linux-snapdragon 4.4.0-1139.147
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS linux-aws 4.4.0-1074.78
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS linux-lts-xenial 4.4.0-185.215~14.04.1

Vulnerabilities 5

References

  • report
    https://ubuntu.com/security/CVE-2020-8992
  • report
    https://ubuntu.com/security/CVE-2020-10690
  • report
    https://ubuntu.com/security/CVE-2020-10711
  • report
    https://ubuntu.com/security/CVE-2020-12770
  • report
    https://ubuntu.com/security/CVE-2020-13143