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CVE-2026-74515

Last refreshed2026-10-17

Status: UPDATED  |  Advisory ID: CVE-2026-74515

Key Details

CVECVE-2026-74515
CVSS Score / Version
8.8 (High) / CVSS v3.1
Updated2026-10-16
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS Prose
attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products
Linux Kernel

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
LinuxLinux Kernel
SubsystemsOT Supporting Infrastructure
SectorsAll Sectors

What to Know

In the Linux kernel, the following vulnerability has been resolved:

KVM: s390: pci: Reject adapter interrupt forwarding if already enabled

The MPCIFC instruction doesn't allow registering adapter interrupts without

first unregistering. So reject any request to enable interrupt forwarding

if its already enabled for the zPCI device. This also fixes overwriting and

thus leaking resources when the ioctl is called multiple times for the same

device. (NVD)

What to Do

Monitor Linux's web page for any future patch releases.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-74515
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-74515

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