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CVE-2026-89923 KVM: s390: Free guest debug data on vcpu destroy

🗓️ 16 Sep 2026 10:32:16Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 38 Views

Linux kernel KVM s390 leaks guest debug data on vCPU destroy, pinning dying memcgs.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/s390/kvm/kvm-s390.c"
    ],
    "versions": [
      {
        "version": "27291e2165b6de70c476b7b675308113edd69a60",
        "lessThan": "053f2068cf9b0654b651fed5ad7649d3deb982bf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "27291e2165b6de70c476b7b675308113edd69a60",
        "lessThan": "6c996b12bbe4a6023076e8eee3cfaf2cc99db76c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "27291e2165b6de70c476b7b675308113edd69a60",
        "lessThan": "d6280fc540d8f4653c9b54a78cb747e128070f5e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "27291e2165b6de70c476b7b675308113edd69a60",
        "lessThan": "544a5a665019cef394ce8bda97fa7a2cab253781",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "27291e2165b6de70c476b7b675308113edd69a60",
        "lessThan": "9a32c4c6a6c23b7f5bf765eb5b83ba7f64a8ec63",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "27291e2165b6de70c476b7b675308113edd69a60",
        "lessThan": "b5acacfdb8966abff91836c1c5bd7da59d8a526e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "27291e2165b6de70c476b7b675308113edd69a60",
        "lessThan": "e4d8b7f176b976474e0800ba71ee2dfa3ce263c9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "27291e2165b6de70c476b7b675308113edd69a60",
        "lessThan": "e7f698b09d4a7c36b299acf680fc50fe868e2bcd",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/s390/kvm/kvm-s390.c"
    ],
    "versions": [
      {
        "version": "3.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.16",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.270",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.221",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.188",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.157",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.110",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.51",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.5",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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16 Sep 2026 10:32Current
EPSS0.0021
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