SB2026081302 - Improper Initialization in Linux kernel time

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Initialization (CVE-ID: CVE-2026-68092)

CWE-ID: CWE-665 - Improper Initialization

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper initialization in the jiffies clocksource when performing early boot timekeeping initialization. A local user can trigger early boot code paths that use the jiffies clocksource before registration to cause a denial of service.

The issue can cause time to stop making progress during boot, leading to a long boot delay in Xen HVM environments.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/75b478096c6bbf57fe366f7f0a8cd5365043ffaa
• https://git.kernel.org/stable/c/cd25e9819620aa1325897912cfb4dd89303325fe
• https://git.kernel.org/stable/c/f24df84cbe05e4471c04ac4b921fc0340bbc7752
• https://git.kernel.org/stable/c/fe9bdea65ba231fcfb155031628bb1e8491b5fe0