QID 198512

Date Published: 2021-09-28

QID 198512: Ubuntu Security Notification for Linux kernel (Raspberry Pi) Vulnerabilities (USN-5071-3)

The kvm hypervisor implementation in the linux kernel did not properly perform reference counting in some situations, leading to a use-after-free vulnerability.
The joystick device interface in the linux kernel did not properly validate data passed via an ioctl().

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.

an attacker who could start and control a vm could possibly use this to expose sensitive information or execute arbitrary code. (
Cve-2021-22543).
A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code on systems with a joystick device registered. (
Cve-2021-3612).

CVSS V3 rated as High - 7.8 severity.

CVSS V2 rated as High - 7.2 severity.

Solution

Refer to Ubuntu advisory: USN-5071-3 for affected packages and patching details, or update with your package manager.

Vendor References

USN-5071-3 - ubuntu.com/security/notices/USN-5071-3

CVEs related to QID 198512

CVE-2021-3612 | CVE-2021-22543 |

Software Advisories

Advisory ID	Software	Component	Link
USN-5071-3	Ubuntu Linux		ubuntu.com/security/notices/USN-5071-3

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].