USN-8643-4

Details

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems:

Network drivers;
Open vSwitch;
SCTP protocol; (CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-64531)

Affected Packages

linux-aws-6.8

Ubuntu 22.04 LTS

Fixed in:

6.8.0-1063.66~22.04.1

linux-azure-fde-6.8

Ubuntu 22.04 LTS

Fixed in:

6.8.0-1064.71~22.04.1

linux-azure-fde

Ubuntu 24.04 LTS

Fixed in:

6.8.0-1064.71

linux-nvidia-tegra

Ubuntu 24.04 LTS

Fixed in:

6.8.0-1032.34

linux-azure-fips

Ubuntu Pro FIPS-updates 24.04 LTS

Fixed in:

6.8.0-1065.73+fips1

References

REPORT

https://ubuntu.com/security/CVE-2026-53224

REPORT

https://ubuntu.com/security/CVE-2026-53246

REPORT

https://ubuntu.com/security/CVE-2026-53247

REPORT

https://ubuntu.com/security/CVE-2026-64531

ADVISORY

https://ubuntu.com/security/notices/USN-8643-4