CVE-2026-80684

medium Red Hat
CVSS v3 Base Score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.1%
Exploitation probability in 30 days
Top 96% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: August 28, 2026 (9 days ago)
Last Modified: August 28, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the KVM (Kernel-based Virtual Machine) subsystem for s390 PCI devices in the Linux kernel. This vulnerability occurs when the `airq_iv_create()` function fails to allocate a resource, returning a NULL value that is not properly checked. An attacker, potentially a malicious guest user, could exploit this unchecked return value, leading to a NULL pointer dereference in `kvm_zpci_set_airq()`. This could result in a system crash, causing a Denial of Service (DoS).

CWE

CWE-476

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org