KVM: s390: pci: Reject adapter interrupt forwarding if already enabled
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/591952b63a9f976da7d49f719f36ec826ee2a575https://git.kernel.org/stable/c/642d2d1067f7c4d753ae0e3ba5bc98b43cfe3c70https://git.kernel.org/stable/c/6837f0ae85fd54cf64c8a0c7c530bba2fae0a207https://git.kernel.org/stable/c/6be1ff49ba81f96a6fa55915e6d920be43ac57cchttps://git.kernel.org/stable/c/78d9648e7e960546d5b72504a0b0358cd8bb1e9dhttps://git.kernel.org/stable/c/8fa01be5a6149404adb82c0979a78f6347edd3ef