USN-4527-1

Advisory lineage Upstream: 16 Downstream: 0
Published: 24 Sept 2020, 22:41
Last modified:03 Jun 2026, 13:33

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 Sept 2020, 22:41
Published
Vulnerability first disclosed
03 Jun 2026, 13:33
Last Modified
Vulnerability information updated

Description

linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities It was discovered that the Conexant 23885 TV card device driver for the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19054) It was discovered that the Atheros HTC based wireless driver in the Linux kernel did not properly deallocate in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19073, CVE-2019-19074) Yue Haibing discovered that the Linux kernel did not properly handle reference counting in sysfs for network devices in some situations. A local attacker could possibly use this to cause a denial of service. (CVE-2019-20811) It was discovered that the F2FS file system in the Linux kernel did not properly perform bounds checking in some situations, leading to an out-of- bounds read. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2019-9445) It was discovered that the F2FS file system in the Linux kernel did not properly validate xattr meta data in some situations, leading to an out-of- bounds read. An attacker could use this to construct a malicious F2FS image that, when mounted, could expose sensitive information (kernel memory). (CVE-2019-9453) It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-0067) It was discovered that the NFS client implementation in the Linux kernel did not properly perform bounds checking before copying security labels in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-25212)

Affected Systems

  • ubuntu•linux

    < 4.4.0-190.220

  • ubuntu•linux-aws

    < 4.4.0-1078.82 | < 4.4.0-1114.127

  • ubuntu•linux-kvm

    < 4.4.0-1080.87

  • ubuntu•linux-lts-xenial

    < 4.4.0-190.220~14.04.1

  • ubuntu•linux-raspi2

    < 4.4.0-1139.148

  • ubuntu•linux-snapdragon

    < 4.4.0-1143.152

References (9)