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CVE-2026-72290 (GCVE-0-2026-72290)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:55 – Updated: 2026-08-17 05:11
VLAI
Title
KVM: s390: pci: Fix GISC refcount leak on AIF enable failure
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc , < 3882224b0e714f34de91e5f28307c5d3fccfe8f8 (git)
Affected: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc , < 6e69317cd44a2f21f8f7a9d93eb3220e868adfa8 (git)
Affected: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc , < 6cd6e1c978784eec9032e2fe94a53e62b674fe3e (git)
Affected: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc , < 5fb75c5272950b3ebe8bdee7abfdafd44f38313b (git)
Affected: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc , < adce12bb0e0dc82d1d6f0821c9faee3145e62a6f (git)
Affected: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc , < 7b69729046a4c58f4cb457184e5ac4aaa179bff4 (git)
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Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: pci: Fix GISC refcount leak on AIF enable failure\n\nkvm_s390_gisc_register() registers the guest ISC before pinning\nthe guest interrupt forwarding pages and allocating the AISB bit.\nIf any of the later setup steps fails, the function unwinds the\npinned pages and other local state, but does not unregister the\nGISC reference. Add the missing kvm_s390_gisc_unregister() to the\nerror unwind path."
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    "datePublished": "2026-08-15T05:55:11.543Z",
    "dateReserved": "2026-08-09T03:40:39.917Z",
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    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-18T07:06:24+00:00",
      "cve": "CVE-2026-72290",
      "id": "CVE-2026-72290",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: KVM: s390: pci: Fix GISC refcount leak on AIF enable failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72290.json",
      "version": "3"
    }
  }
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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