CVE-2026-89584

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the block subsystem where bio-based drivers may fail to check alignment splits, and stacking block drivers may not properly handle misalignment detected after bio submission. This allows misaligned user space vectors to bypass validation. The fix involves validating user vectors against the device's dma alignment during the bio construction from the iov iter, rejecting misaligned requests with -EINVAL.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.