CVE-2026-89909 (GCVE-0-2026-89909)
Vulnerability from cvelistv5
Published
2026-09-16 10:32
Modified
2026-10-19 08:54
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Free init resources if kvm_init() fails kvm_loongarch_init() calls kvm_loongarch_env_init() to allocate the per-CPU kvm_context (vmcs) and kvm_loongarch_ops and to register the perf callbacks, and then calls kvm_init(). If kvm_init() fails its result is returned directly, but since module_init() does not run the module_exit() stuff on failure, so kvm_loongarch_env_exit() is never called and those resources are leaked. So call kvm_loongarch_env_exit() when kvm_init() fails, matching the teardown-on-failure pattern used by riscv_kvm_init().
References
Impacted products
Vendor Product Version
Linux Linux Version: 2bd6ac68726131da32ace9717aa63ff68cf6605c
Version: 2bd6ac68726131da32ace9717aa63ff68cf6605c
Version: 2bd6ac68726131da32ace9717aa63ff68cf6605c
Version: 2bd6ac68726131da32ace9717aa63ff68cf6605c
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/loongarch/kvm/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6bbbd7b719233645a5c120557a9ca1422e6b7a48",
              "status": "affected",
              "version": "2bd6ac68726131da32ace9717aa63ff68cf6605c",
              "versionType": "git"
            },
            {
              "lessThan": "6b78786ee7260d9818cf1d7a245b7a655ef83076",
              "status": "affected",
              "version": "2bd6ac68726131da32ace9717aa63ff68cf6605c",
              "versionType": "git"
            },
            {
              "lessThan": "3bf6f5e2e1007d38a5f35bd37e94ab645a0c40bc",
              "status": "affected",
              "version": "2bd6ac68726131da32ace9717aa63ff68cf6605c",
              "versionType": "git"
            },
            {
              "lessThan": "f7a1064cce3b100b54780c68529176232d8eb01e",
              "status": "affected",
              "version": "2bd6ac68726131da32ace9717aa63ff68cf6605c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/loongarch/kvm/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "lessThan": "6.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.51",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.5",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: KVM: Free init resources if kvm_init() fails\n\nkvm_loongarch_init() calls kvm_loongarch_env_init() to allocate the\nper-CPU kvm_context (vmcs) and kvm_loongarch_ops and to register the\nperf callbacks, and then calls kvm_init(). If kvm_init() fails its\nresult is returned directly, but since module_init() does not run the\nmodule_exit() stuff on failure, so kvm_loongarch_env_exit() is never\ncalled and those resources are leaked.\n\nSo call kvm_loongarch_env_exit() when kvm_init() fails, matching the\nteardown-on-failure pattern used by riscv_kvm_init()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:54:42.797Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6bbbd7b719233645a5c120557a9ca1422e6b7a48"
        },
        {
          "url": "https://git.kernel.org/stable/c/6b78786ee7260d9818cf1d7a245b7a655ef83076"
        },
        {
          "url": "https://git.kernel.org/stable/c/3bf6f5e2e1007d38a5f35bd37e94ab645a0c40bc"
        },
        {
          "url": "https://git.kernel.org/stable/c/f7a1064cce3b100b54780c68529176232d8eb01e"
        }
      ],
      "title": "LoongArch: KVM: Free init resources if kvm_init() fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89909",
    "datePublished": "2026-09-16T10:32:07.278Z",
    "dateReserved": "2026-09-11T19:38:34.774Z",
    "dateUpdated": "2026-10-19T08:54:42.797Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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