Improper control of a resource through its lifetime in Linux kernel - CVE-2026-89760
Published: September 12, 2026
Vulnerability identifier: #VU149029
CSH Severity: Low
CVSS v4: 5.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89760
CWE-ID: CWE-664
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause memory corruption, process crashes, or data instability.
The vulnerability exists due to improper resource lifecycle management in swap_free_hibernation_slot() when freeing a hibernation slot containing a folio in the swap cache. A local user can cause the cached folio's swap-table entry to be cleared to cause memory corruption, process crashes, or data instability.
Cluster readahead can place a folio in the swap cache for the hibernation slot.
Affected software
Linux kernel
How to mitigate CVE-2026-89760
Install security update from vendor's repository.