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GHSA-W6F2-9H8P-7G45

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72290"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:00Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-w6f2-9h8p-7g45",
  "modified": "2026-08-15T06:32:18Z",
  "published": "2026-08-15T06:32:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72290"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3882224b0e714f34de91e5f28307c5d3fccfe8f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5fb75c5272950b3ebe8bdee7abfdafd44f38313b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6cd6e1c978784eec9032e2fe94a53e62b674fe3e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e69317cd44a2f21f8f7a9d93eb3220e868adfa8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b69729046a4c58f4cb457184e5ac4aaa179bff4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/adce12bb0e0dc82d1d6f0821c9faee3145e62a6f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-08-15 05:55 – Updated: 2026-08-17 05:11

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

Linux mitre root Scorecard

References

6 references

URL	Tags
https://git.kernel.org/stable/c/3882224b0e714f34d…
https://git.kernel.org/stable/c/6e69317cd44a2f21f…
https://git.kernel.org/stable/c/6cd6e1c978784eec9…
https://git.kernel.org/stable/c/5fb75c5272950b3eb…
https://git.kernel.org/stable/c/adce12bb0e0dc82d1…
https://git.kernel.org/stable/c/7b69729046a4c58f4…

Impacted products

2 products

Vendor	Product	Version
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)
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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/s390/kvm/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3882224b0e714f34de91e5f28307c5d3fccfe8f8",
              "status": "affected",
              "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
              "versionType": "git"
            },
            {
              "lessThan": "6e69317cd44a2f21f8f7a9d93eb3220e868adfa8",
              "status": "affected",
              "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
              "versionType": "git"
            },
            {
              "lessThan": "6cd6e1c978784eec9032e2fe94a53e62b674fe3e",
              "status": "affected",
              "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
              "versionType": "git"
            },
            {
              "lessThan": "5fb75c5272950b3ebe8bdee7abfdafd44f38313b",
              "status": "affected",
              "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
              "versionType": "git"
            },
            {
              "lessThan": "adce12bb0e0dc82d1d6f0821c9faee3145e62a6f",
              "status": "affected",
              "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
              "versionType": "git"
            },
            {
              "lessThan": "7b69729046a4c58f4cb457184e5ac4aaa179bff4",
              "status": "affected",
              "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/s390/kvm/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.178",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.97",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:11:52.778Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3882224b0e714f34de91e5f28307c5d3fccfe8f8"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e69317cd44a2f21f8f7a9d93eb3220e868adfa8"
        },
        {
          "url": "https://git.kernel.org/stable/c/6cd6e1c978784eec9032e2fe94a53e62b674fe3e"
        },
        {
          "url": "https://git.kernel.org/stable/c/5fb75c5272950b3ebe8bdee7abfdafd44f38313b"
        },
        {
          "url": "https://git.kernel.org/stable/c/adce12bb0e0dc82d1d6f0821c9faee3145e62a6f"
        },
        {
          "url": "https://git.kernel.org/stable/c/7b69729046a4c58f4cb457184e5ac4aaa179bff4"
        }
      ],
      "title": "KVM: s390: pci: Fix GISC refcount leak on AIF enable failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72290",
    "datePublished": "2026-08-15T05:55:11.543Z",
    "dateReserved": "2026-08-09T03:40:39.917Z",
    "dateUpdated": "2026-08-17T05:11:52.778Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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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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GHSA-W6F2-9H8P-7G45

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

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