CVE-2026-98651
kernel: KVM: s390: Properly handle NULL pointer in dat_cond_set_storage_key()
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 18, 2026
Updated · October 22, 2026
Description
A flaw was found in the Linux kernel's KVM (Kernel-based Virtual Machine) subsystem for the s390 architecture. This vulnerability occurs when memory management routines fail to properly validate an empty pointer reference during storage key operations. A local attacker could exploit this flaw to cause the kernel to crash, resulting in a Denial of Service (DoS).
CVSS score applicability
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.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference