CVE-2026-98473Low· 1.9▾ SunlitA flaw was found in the Linux kernel's s390 Virtual Function I/O Adjunct Processor (VFIO-AP) device driver. A local user with administrative privileges can trigger this issue by removing an AP queue from the host configuration while it rem…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 10.5 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
Last analysed / modified upstream
0.2%
— → 1.9
none → low
A flaw was found in the Linux kernel's s390 Virtual Function I/O Adjunct Processor (VFIO-AP) device driver. A local user with administrative privileges can trigger this issue by removing an AP queue from the host configuration while it remains assigned to an active virtual machine. Because the driver does not properly clean up device resources when the hardware is no longer available, pinned memory pages and interrupt registrations are leaked, and subsequent cleanup attempts may cause a double-free condition. This flaw can lead to memory exhaustion, kernel instability, or a Denial of Service (DoS).
kernel: s390/vfio-ap: fix KVM GISC and page leak when queue removed from host config — rated Low by Red Hat. Released 2026-10-18, updated 2026-10-20.
Affected:
No fix planned:
Not affected:
Fix deferred
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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