CVE-2026-53164 (GCVE-0-2026-53164)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-06-25 08:38
VLAI
Title
iommu/dma: Do not try to iommu_map a 0 length region in swiotlb
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/dma: Do not try to iommu_map a 0 length region in swiotlb iommu_dma_iova_link_swiotlb() processes a mapping that is unaligned in three parts, the head, middle and trailer. If the middle is empty because there are no aligned pages it will call down to iommu_map() with a 0 size which the iommupt implementation will fail as illegal. It then tries to do an error unwind and starts from the wrong spot corrupting the mapping so the eventual destruction triggers a WARN_ON. Check for 0 length and avoid mapping and use offset not 0 as the starting point to unlink. This is frequently triggered by using some kinds of thunderbolt NVMe drives that trigger forced SWIOTLB for unaligned memory. NVMe seems to pass in oddly aligned buffers for the passthrough commands from smartctl that hit this condition.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 433a76207dcf5facc0183acb790f6e8398585258 , < ab61c990a87d084f5565ee70340543e3a5394697 (git)
Affected: 433a76207dcf5facc0183acb790f6e8398585258 , < b16f8d40bac9ced838d24c9842707af9ecae92e2 (git)
Affected: 433a76207dcf5facc0183acb790f6e8398585258 , < 6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3 (git)
Create a notification for this product.
Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/dma-iommu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ab61c990a87d084f5565ee70340543e3a5394697",
              "status": "affected",
              "version": "433a76207dcf5facc0183acb790f6e8398585258",
              "versionType": "git"
            },
            {
              "lessThan": "b16f8d40bac9ced838d24c9842707af9ecae92e2",
              "status": "affected",
              "version": "433a76207dcf5facc0183acb790f6e8398585258",
              "versionType": "git"
            },
            {
              "lessThan": "6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3",
              "status": "affected",
              "version": "433a76207dcf5facc0183acb790f6e8398585258",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/dma-iommu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.36",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.13",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/dma: Do not try to iommu_map a 0 length region in swiotlb\n\niommu_dma_iova_link_swiotlb() processes a mapping that is unaligned in three\nparts, the head, middle and trailer. If the middle is empty because there\nare no aligned pages it will call down to iommu_map() with a 0 size\nwhich the iommupt implementation will fail as illegal.\n\nIt then tries to do an error unwind and starts from the wrong spot\ncorrupting the mapping so the eventual destruction triggers a WARN_ON.\n\nCheck for 0 length and avoid mapping and use offset not 0 as the starting\npoint to unlink.\n\nThis is frequently triggered by using some kinds of thunderbolt NVMe\ndrives that trigger forced SWIOTLB for unaligned memory. NVMe seems to\npass in oddly aligned buffers for the passthrough commands from smartctl\nthat hit this condition."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:38:44.770Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ab61c990a87d084f5565ee70340543e3a5394697"
        },
        {
          "url": "https://git.kernel.org/stable/c/b16f8d40bac9ced838d24c9842707af9ecae92e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3"
        }
      ],
      "title": "iommu/dma: Do not try to iommu_map a 0 length region in swiotlb",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53164",
    "datePublished": "2026-06-25T08:38:44.770Z",
    "dateReserved": "2026-06-09T07:44:35.388Z",
    "dateUpdated": "2026-06-25T08:38:44.770Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-53164",
      "date": "2026-08-06",
      "epss": "0.00121",
      "percentile": "0.02205"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-53164\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-06-25T09:16:33.800\",\"lastModified\":\"2026-07-07T18:14:53.877\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommu/dma: Do not try to iommu_map a 0 length region in swiotlb\\n\\niommu_dma_iova_link_swiotlb() processes a mapping that is unaligned in three\\nparts, the head, middle and trailer. If the middle is empty because there\\nare no aligned pages it will call down to iommu_map() with a 0 size\\nwhich the iommupt implementation will fail as illegal.\\n\\nIt then tries to do an error unwind and starts from the wrong spot\\ncorrupting the mapping so the eventual destruction triggers a WARN_ON.\\n\\nCheck for 0 length and avoid mapping and use offset not 0 as the starting\\npoint to unlink.\\n\\nThis is frequently triggered by using some kinds of thunderbolt NVMe\\ndrives that trigger forced SWIOTLB for unaligned memory. NVMe seems to\\npass in oddly aligned buffers for the passthrough commands from smartctl\\nthat hit this condition.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/iommu/dma-iommu.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"433a76207dcf5facc0183acb790f6e8398585258\",\"lessThan\":\"ab61c990a87d084f5565ee70340543e3a5394697\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"433a76207dcf5facc0183acb790f6e8398585258\",\"lessThan\":\"b16f8d40bac9ced838d24c9842707af9ecae92e2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"433a76207dcf5facc0183acb790f6e8398585258\",\"lessThan\":\"6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/iommu/dma-iommu.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.36\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.13\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.16\",\"versionEndExcluding\":\"6.18.36\",\"matchCriteriaId\":\"C502A34A-34EF-41DB-9280-104B7360171B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"7.0.13\",\"matchCriteriaId\":\"6A64BF9F-3BCA-42FD-98CB-8F03474D2B1E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"B1EF7059-E670-45F4-B422-54C40FA86390\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"0D38F0BF-A728-4133-A358-D44A2F7EE6D6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"EC732D08-5F7B-46D9-B154-E60C7F4F0A97\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"E5910A9D-F60A-409A-B486-FE66BFEBA9B9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"81DFF19E-9CF8-49C6-8C36-1E4038622933\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"B0E8FC71-3952-444C-83E9-718DBBBEC615\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"1039E95A-8CC3-4C88-8FF9-5C08EEB861C9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ab61c990a87d084f5565ee70340543e3a5394697\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b16f8d40bac9ced838d24c9842707af9ecae92e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-07T18:57:52+00:00",
      "cve": "CVE-2026-53164",
      "id": "CVE-2026-53164",
      "initial_release_date": "2026-06-25T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iommu/dma: Do not try to iommu_map a 0 length region in swiotlb",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53164.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-03T23:35:43Z",
      "cve": "CVE-2026-53164",
      "id": "CVE-2026-53164",
      "initial_release_date": "2026-06-26T02:11:33Z",
      "product_status:known_not_affected": "295",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-53164",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53164.json",
      "version": "4"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.