Vulnerability 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.
References
- https://git.kernel.org/stable/c/3882224b0e714f34de91e5f28307c5d3fccfe8f8
- https://git.kernel.org/stable/c/5fb75c5272950b3ebe8bdee7abfdafd44f38313b
- https://git.kernel.org/stable/c/6cd6e1c978784eec9032e2fe94a53e62b674fe3e
- https://git.kernel.org/stable/c/6e69317cd44a2f21f8f7a9d93eb3220e868adfa8
- https://git.kernel.org/stable/c/7b69729046a4c58f4cb457184e5ac4aaa179bff4
- https://git.kernel.org/stable/c/adce12bb0e0dc82d1d6f0821c9faee3145e62a6f
FAQ
What is CVE-2026-72290?
CVE-2026-72290 is a documented vulnerability. 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 g...
How severe is CVE-2026-72290?
CVSS scoring is not yet available for CVE-2026-72290. Check NVD for updates.
Is there a patch for CVE-2026-72290?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.