CVE-2026-72290

UnknownEPSS 0.21%

Last modified

CVE-2026-72290 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix GISC refcount leak on AIF enable failure kvm_s390_gisc_register() registers the guest ISC before pinning the guest interrupt forwarding pages and allocating the AISB bit. If any of the later setup steps fails, the function unwinds the pinned pages and other local state, but does not unregister the GISC reference. Add the missing kvm_s390_gisc_unregister() to the error unwind path.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix GISC refcount leak on AIF enable failure kvm_s390_gisc_register() registers the guest ISC before pinning the guest interrupt forwarding pages and allocating the AISB bit. If any of the later setup steps fails, the function unwinds the pinned pages and other local state, but does not unregister the GISC reference. Add the missing kvm_s390_gisc_unregister() to the error unwind path.

Metrics

EPSS Probability
0.21%

10.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < 3882224b0e714f34de91e5f28307c5d3fccfe8f8; >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < 6e69317cd44a2f21f8f7a9d93eb3220e868adfa8; >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < 6cd6e1c978784eec9032e2fe94a53e62b674fe3e; >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < 5fb75c5272950b3ebe8bdee7abfdafd44f38313b; >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < adce12bb0e0dc82d1d6f0821c9faee3145e62a6f; >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < 7b69729046a4c58f4cb457184e5ac4aaa179bff4
LinuxLinux6.0

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72290?
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix GISC refcount leak on AIF enable failure kvm_s390_gisc_register() registers the guest ISC before pinning the guest interrupt forwarding pages and allocating the AISB bit. If any of the later setup steps fails, the function unwinds the pinned pages and other local state, but does not unregister the GISC reference. Add the missing kvm_s390_gisc_unregister() to the error unwind path.
How severe is CVE-2026-72290?
Severity scoring for CVE-2026-72290 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72290?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST