CVE-2026-89760

A flaw in the Linux kernel 's mm, swap subsystem where swap_free_hibernation_slot() unconditionally calls __swap_cluster_free_entries() without first checking whether a folio resides on the slot in the swap cache. Cluster readahead can place a folio on a hibernation slot; freeing the slot then cl...

CVE-2026-89760 mm, swap: don't free a hibernation slot that is in the swap cache

In the Linux kernel, the following vulnerability has been resolved: mm, swap: don't free a hibernation slot that is in the swap cache A slot with a folio in the swap cache is freed when the folio leaves the cache, not when its count drops. swapputentriescluster follows that rule...