QID 198367

Date Published: 2021-05-17

QID 198367: Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4950-1)

The ebpf implementation in the linux kernel did not properly verify that a bpf program only reserved as much memory for a ring buffer as was allocated

A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code
(CVE-2021-3489)

  • CVSS V3 rated as Medium - 5.6 severity.
  • CVSS V2 rated as High - 6.8 severity.
    • Solution
    Refer to Ubuntu advisory: USN-4950-1 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 198367

    CVE-2021-3491 | CVE-2021-3489 | CVE-2021-3490 |
    Software Advisories
    Advisory ID Software Component Link
    USN-4950-1 Ubuntu Linux URL Logo usn.ubuntu.com/4950-1
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