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OpenAdvisories
High USN-5802-1 4 CVEs

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

Published Jan 12, 2023 · Updated Oct 22, 2026

Ecosystem: Ubuntu

Summary

It was discovered that the NFSD implementation in the Linux kernel did not
properly handle some RPC messages, leading to a buffer overflow. A remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2022-43945)

Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation
in the Linux kernel contained multiple use-after-free vulnerabilities. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2022-42896)

It was discovered that the Xen netback driver in the Linux kernel did not
properly handle packets structured in certain ways. An attacker in a guest
VM could possibly use this to cause a denial of service (host NIC
availability). (CVE-2022-3643)

It was discovered that an integer overflow vulnerability existed in the
Bluetooth subsystem in the Linux kernel. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2022-45934)

Fixed packages 4

ReleasePackageFixed in
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS linux-aws 4.4.0-1115.121
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS linux-lts-xenial 4.4.0-236.270~14.04.1
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS linux 4.4.0-236.270
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS linux-kvm 4.4.0-1116.126

Vulnerabilities 4

References

  • report
    https://ubuntu.com/security/CVE-2022-3643
  • report
    https://ubuntu.com/security/CVE-2022-42896
  • report
    https://ubuntu.com/security/CVE-2022-43945
  • report
    https://ubuntu.com/security/CVE-2022-45934