CVE-2022-49077

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

Description A resolved issue in the Linux kernel involves the mremap() syscall. When this syscall is called with old size=0 and ends up in move page tables(), it unnecessarily calls invalidate range start() and invalidate range end() with an empty range. This causes a warning in KVM's mmu notifier, as empty ranges have been associated with off-by-one bugs in the past. The issue is fixed with an early return from move page tables().

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