CVE-2026-68324

A flaw was found in the Intel IOMMU (Input/Output Memory Management Unit) driver within the Linux kernel. The dmar_latency_disable() function incorrectly calculates the size for a memory clear operation, leading to an out-of-bounds write. A local attacker could exploit this vulnerability to corrupt adjacent memory, potentially leading to system instability or a denial of service.

This issue affects Intel IOMMU latency statistics. dmar_latency_disable() memset size clears beyond the target entry, writing adjacent array elements. Systems without Intel VT-d DMAR latency support are not affected.

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.