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CVE-2026-74514 KVM: s390: pci: Fix memory accounting for pinned/unpinned pages

🗓️ 15 Aug 2026 12:27:34Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 43 Views

KVM s390 PCI memory accounting leaks user_struct refcount and misattributes pages to wrong mm_struct.

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/pci.c",
      "arch/s390/kvm/pci.h"
    ],
    "versions": [
      {
        "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
        "lessThan": "ad1c2ac7f15b224cf9ab26b593caa9bd1a4be72e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
        "lessThan": "dc7465a364104526c56b922c9de9dfcc08a7d5f7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
        "lessThan": "47cfd75d9df7c8f425b0d769328fe43a8a8e606e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
        "lessThan": "70871b121f81d08879363cb1238a4c85c5c2800c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
        "lessThan": "e3f732e086e438c52c7400bd2734bb166aa4752c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc",
        "lessThan": "36f6999ecde3976731a8bfc0b8e667da6f593069",
        "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/pci.c",
      "arch/s390/kvm/pci.h"
    ],
    "versions": [
      {
        "version": "6.0",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.0",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.184",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.152",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.104",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.44",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.8",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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