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CVE-2026-74515NVD
Vulnerability Summary
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.
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.
CVSS v3.1 Base Metrics
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
External References
- https://git.kernel.org/stable/c/591952b63a9f976da7d49f719f36ec826ee2a575
- https://git.kernel.org/stable/c/642d2d1067f7c4d753ae0e3ba5bc98b43cfe3c70
- https://git.kernel.org/stable/c/6837f0ae85fd54cf64c8a0c7c530bba2fae0a207
- https://git.kernel.org/stable/c/6be1ff49ba81f96a6fa55915e6d920be43ac57cc
- https://git.kernel.org/stable/c/78d9648e7e960546d5b72504a0b0358cd8bb1e9d
- https://git.kernel.org/stable/c/8fa01be5a6149404adb82c0979a78f6347edd3ef