QID 198426

Date Published: 2021-06-30

QID 198426: Ubuntu Security Notification for Linux kernel (KVM) vulnerabilities (USN-4997-2)

Usn-4997-1 fixed vulnerabilities in the linux kernel for ubuntu 21.04. Race condition in the can bcm networking protocol of the linux kernel leading to multiple use-after-free vulnerabilities.
Use-after-free vulnerability in the nfc implementation in the linux kernel.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

This update provides the corresponding updates for the linux kvm kernel for ubuntu 21.04.
A local attacker could use this issue to execute arbitrary code. (
Cve-2021-3609).
A privileged local attacker could use this issue to cause a denial of service (system crash) or possibly execute arbitrary code. (
Cve-2021-23134).

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as High - 7.2 severity.
    • Solution
    Refer to Ubuntu advisory: USN-4997-2 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 198426

    CVE-2021-3543 | CVE-2021-3506 | CVE-2020-24586 | CVE-2021-33034 | CVE-2021-23134 | CVE-2020-26147 | CVE-2021-23133 | CVE-2021-32399 | CVE-2020-26141 | CVE-2021-31440 | CVE-2020-26145 | CVE-2020-24588 | CVE-2021-31829 | CVE-2020-24587 | CVE-2020-26139 | CVE-2021-3609 | CVE-2021-33200 |
    Software Advisories
    Advisory ID Software Component Link
    USN-4997-2 Ubuntu Linux URL Logo usn.ubuntu.com/4997-2
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