CVE-2026-72290 (GCVE-0-2026-72290)
Vulnerability from cvelistv5
Published
2026-08-15 05:55
Modified
2026-08-17 05:11
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc
Version: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc
Version: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc
Version: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc
Version: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc
Version: 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc
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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",
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          ]
        },
        {
          "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
                },
                {
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                  "versionEndExcluding": "6.12.97",
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                {
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                  "versionEndExcluding": "6.18.40",
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                  "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"
}


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