CVE-2026-43323

A flaw was found in the Linux kernel. Incorrect tracking of virtual runtime (zero_vruntime) in the scheduler's fair scheduling component can occur under specific conditions, such as when tasks frequently yield or when multiple control groups (cgroups) are active. This can lead to the scheduler's internal state becoming inconsistent, potentially causing system instability or unresponsiveness. A local attacker could exploit this vulnerability to cause a denial of service.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.