CVE-2025-71202 (GCVE-0-2025-71202)
Vulnerability from cvelistv5
Published
2026-02-14 15:36
Modified
2026-02-16 08:58
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/sva: invalidate stale IOTLB entries for kernel address space Introduce a new IOMMU interface to flush IOTLB paging cache entries for the CPU kernel address space. This interface is invoked from the x86 architecture code that manages combined user and kernel page tables, specifically before any kernel page table page is freed and reused. This addresses the main issue with vfree() which is a common occurrence and can be triggered by unprivileged users. While this resolves the primary problem, it doesn't address some extremely rare case related to memory unplug of memory that was present as reserved memory at boot, which cannot be triggered by unprivileged users. The discussion can be found at the link below. Enable SVA on x86 architecture since the IOMMU can now receive notification to flush the paging cache before freeing the CPU kernel page table pages.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2f26e0a9c9860db290d63e9d85c2c8c09813677f
Version: 2f26e0a9c9860db290d63e9d85c2c8c09813677f
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/Kconfig",
            "drivers/iommu/iommu-sva.c",
            "include/linux/iommu.h",
            "mm/pgtable-generic.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "9f0a7ab700f8620e433b05c57fbd26c92ea186d9",
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              "version": "2f26e0a9c9860db290d63e9d85c2c8c09813677f",
              "versionType": "git"
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          "product": "Linux",
          "programFiles": [
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            "mm/pgtable-generic.c"
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          "vendor": "Linux",
          "versions": [
            {
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              "version": "4.4"
            },
            {
              "lessThan": "4.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.7",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
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                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/sva: invalidate stale IOTLB entries for kernel address space\n\nIntroduce a new IOMMU interface to flush IOTLB paging cache entries for\nthe CPU kernel address space.  This interface is invoked from the x86\narchitecture code that manages combined user and kernel page tables,\nspecifically before any kernel page table page is freed and reused.\n\nThis addresses the main issue with vfree() which is a common occurrence\nand can be triggered by unprivileged users.  While this resolves the\nprimary problem, it doesn\u0027t address some extremely rare case related to\nmemory unplug of memory that was present as reserved memory at boot, which\ncannot be triggered by unprivileged users.  The discussion can be found at\nthe link below.\n\nEnable SVA on x86 architecture since the IOMMU can now receive\nnotification to flush the paging cache before freeing the CPU kernel page\ntable pages."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-16T08:58:38.840Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9f0a7ab700f8620e433b05c57fbd26c92ea186d9"
        },
        {
          "url": "https://git.kernel.org/stable/c/e37d5a2d60a338c5917c45296bac65da1382eda5"
        }
      ],
      "title": "iommu/sva: invalidate stale IOTLB entries for kernel address space",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71202",
    "datePublished": "2026-02-14T15:36:06.588Z",
    "dateReserved": "2026-01-31T11:36:51.194Z",
    "dateUpdated": "2026-02-16T08:58:38.840Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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