Vulnerability-Lookup

FKIE_CVE-2023-52910

Vulnerability from fkie_nvd - Published: 2024-08-21 07:15 - Updated: 2026-08-04 10:18

Severity

8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: iommu/iova: Fix alloc iova overflows issue In __alloc_and_insert_iova_range, there is an issue that retry_pfn overflows. The value of iovad->anchor.pfn_hi is ~0UL, then when iovad->cached_node is iovad->anchor, curr_iova->pfn_hi + 1 will overflow. As a result, if the retry logic is executed, low_pfn is updated to 0, and then new_pfn < low_pfn returns false to make the allocation successful. This issue occurs in the following two situations: 1. The first iova size exceeds the domain size. When initializing iova domain, iovad->cached_node is assigned as iovad->anchor. For example, the iova domain size is 10M, start_pfn is 0x1_F000_0000, and the iova size allocated for the first time is 11M. The following is the log information, new->pfn_lo is smaller than iovad->cached_node. Example log as follows: [ 223.798112][T1705487] sh: [name:iova&]__alloc_and_insert_iova_range start_pfn:0x1f0000,retry_pfn:0x0,size:0xb00,limit_pfn:0x1f0a00 [ 223.799590][T1705487] sh: [name:iova&]__alloc_and_insert_iova_range success start_pfn:0x1f0000,new->pfn_lo:0x1efe00,new->pfn_hi:0x1f08ff 2. The node with the largest iova->pfn_lo value in the iova domain is deleted, iovad->cached_node will be updated to iovad->anchor, and then the alloc iova size exceeds the maximum iova size that can be allocated in the domain. After judging that retry_pfn is less than limit_pfn, call retry_pfn+1 to fix the overflow issue.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/61cbf790e7329ed78877560be7136f0b911bba7f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c929a230c84441e400c32e7b7b4ab763711fb63e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dcdb3ba7e2a8caae7bfefd603bc22fd0ce9a389c	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.2
linux	linux_kernel	6.2
linux	linux_kernel	6.2

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iova.c"
          ],
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          "vendor": "Linux",
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            },
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "5.15.89",
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            },
            {
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              "version": "6.1.7",
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            },
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              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
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  "configurations": [
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    {
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/iova: Fix alloc iova overflows issue\n\nIn __alloc_and_insert_iova_range, there is an issue that retry_pfn\noverflows. The value of iovad-\u003eanchor.pfn_hi is ~0UL, then when\niovad-\u003ecached_node is iovad-\u003eanchor, curr_iova-\u003epfn_hi + 1 will\noverflow. As a result, if the retry logic is executed, low_pfn is\nupdated to 0, and then new_pfn \u003c low_pfn returns false to make the\nallocation successful.\n\nThis issue occurs in the following two situations:\n1. The first iova size exceeds the domain size. When initializing\niova domain, iovad-\u003ecached_node is assigned as iovad-\u003eanchor. For\nexample, the iova domain size is 10M, start_pfn is 0x1_F000_0000,\nand the iova size allocated for the first time is 11M. The\nfollowing is the log information, new-\u003epfn_lo is smaller than\niovad-\u003ecached_node.\n\nExample log as follows:\n[  223.798112][T1705487] sh: [name:iova\u0026]__alloc_and_insert_iova_range\nstart_pfn:0x1f0000,retry_pfn:0x0,size:0xb00,limit_pfn:0x1f0a00\n[  223.799590][T1705487] sh: [name:iova\u0026]__alloc_and_insert_iova_range\nsuccess start_pfn:0x1f0000,new-\u003epfn_lo:0x1efe00,new-\u003epfn_hi:0x1f08ff\n\n2. The node with the largest iova-\u003epfn_lo value in the iova domain\nis deleted, iovad-\u003ecached_node will be updated to iovad-\u003eanchor,\nand then the alloc iova size exceeds the maximum iova size that can\nbe allocated in the domain.\n\nAfter judging that retry_pfn is less than limit_pfn, call retry_pfn+1\nto fix the overflow issue."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: iommu/iova: soluciona el problema de desbordamiento de alloc iova. En __alloc_and_insert_iova_range, hay un problema que retry_pfn se desborda. El valor de iovad-\u0026gt;anchor.pfn_hi es ~0UL, luego, cuando iovad-\u0026gt;cached_node es iovad-\u0026gt;anchor, curr_iova-\u0026gt;pfn_hi + 1 se desbordar\u00e1. Como resultado, si se ejecuta la l\u00f3gica de reintento, low_pfn se actualiza a 0 y luego new_pfn \u0026lt; low_pfn devuelve falso para que la asignaci\u00f3n sea exitosa. Este problema ocurre en las dos situaciones siguientes: 1. El tama\u00f1o del primer iova excede el tama\u00f1o del dominio. Al inicializar el dominio iova, iovad-\u0026gt;cached_node se asigna como iovad-\u0026gt;anchor. Por ejemplo, el tama\u00f1o del dominio iova es 10 M, start_pfn es 0x1_F000_0000 y el tama\u00f1o de iova asignado por primera vez es 11 M. La siguiente es la informaci\u00f3n de registro, new-\u0026gt;pfn_lo es m\u00e1s peque\u00f1o que iovad-\u0026gt;cached_node. Registro de ejemplo como sigue: [ 223.798112][T1705487] sh: [name:iova\u0026amp;]__alloc_and_insert_iova_range start_pfn:0x1f0000,retry_pfn:0x0,size:0xb00,limit_pfn:0x1f0a00 [ 223.799590][T1705487] [nombre:iova\u0026amp;]__alloc_and_insert_iova_range \u00e9xito start_pfn :0x1f0000,new-\u0026gt;pfn_lo:0x1efe00,new-\u0026gt;pfn_hi:0x1f08ff 2. El nodo con el valor iova-\u0026gt;pfn_lo m\u00e1s grande en el dominio iova se elimina, iovad-\u0026gt;cached_node se actualizar\u00e1 a iovad-\u0026gt;anchor y luego el tama\u00f1o de alloc iova excede el tama\u00f1o m\u00e1ximo de iova que se puede asignar en el dominio. Despu\u00e9s de juzgar que retry_pfn es menor que limit_pfn, llame a retry_pfn+1 para solucionar el problema de desbordamiento."
    }
  ],
  "id": "CVE-2023-52910",
  "lastModified": "2026-08-04T10:18:48.597",
  "metrics": {
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        "source": "nvd@nist.gov",
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
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    }
  ]
}

CVE-2023-52910 (GCVE-0-2023-52910)

Vulnerability from cvelistv5 – Published: 2024-08-21 06:10 – Updated: 2026-08-05 09:11

Title

iommu/iova: Fix alloc iova overflows issue

Summary

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 15:34 UTC

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/c929a230c84441e40…
https://git.kernel.org/stable/c/61cbf790e7329ed78…
https://git.kernel.org/stable/c/dcdb3ba7e2a8caae7…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4e89dce725213d3d0b0475211b500eda4ef4bf2f , < c929a230c84441e400c32e7b7b4ab763711fb63e (git) Affected: 4e89dce725213d3d0b0475211b500eda4ef4bf2f , < 61cbf790e7329ed78877560be7136f0b911bba7f (git) Affected: 4e89dce725213d3d0b0475211b500eda4ef4bf2f , < dcdb3ba7e2a8caae7bfefd603bc22fd0ce9a389c (git)
Linux	Linux	Affected: 5.11 Unaffected: 0 , < 5.11 (semver) Unaffected: 5.15.89 , ≤ 5.15.* (semver) Unaffected: 6.1.7 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-52910",
                "options": [
                  {
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                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:34:52.014408Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:33:03.507Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/iova: Fix alloc iova overflows issue\n\nIn __alloc_and_insert_iova_range, there is an issue that retry_pfn\noverflows. The value of iovad-\u003eanchor.pfn_hi is ~0UL, then when\niovad-\u003ecached_node is iovad-\u003eanchor, curr_iova-\u003epfn_hi + 1 will\noverflow. As a result, if the retry logic is executed, low_pfn is\nupdated to 0, and then new_pfn \u003c low_pfn returns false to make the\nallocation successful.\n\nThis issue occurs in the following two situations:\n1. The first iova size exceeds the domain size. When initializing\niova domain, iovad-\u003ecached_node is assigned as iovad-\u003eanchor. For\nexample, the iova domain size is 10M, start_pfn is 0x1_F000_0000,\nand the iova size allocated for the first time is 11M. The\nfollowing is the log information, new-\u003epfn_lo is smaller than\niovad-\u003ecached_node.\n\nExample log as follows:\n[  223.798112][T1705487] sh: [name:iova\u0026]__alloc_and_insert_iova_range\nstart_pfn:0x1f0000,retry_pfn:0x0,size:0xb00,limit_pfn:0x1f0a00\n[  223.799590][T1705487] sh: [name:iova\u0026]__alloc_and_insert_iova_range\nsuccess start_pfn:0x1f0000,new-\u003epfn_lo:0x1efe00,new-\u003epfn_hi:0x1f08ff\n\n2. The node with the largest iova-\u003epfn_lo value in the iova domain\nis deleted, iovad-\u003ecached_node will be updated to iovad-\u003eanchor,\nand then the alloc iova size exceeds the maximum iova size that can\nbe allocated in the domain.\n\nAfter judging that retry_pfn is less than limit_pfn, call retry_pfn+1\nto fix the overflow issue."
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              "lang": "en",
              "value": "AV:L - The bug is in the IOVA allocator used by dma-iommu (and related drivers); it is reached when a local process causes a DMA mapping larger than the IOVA domain via device interfaces such as V4L2/DRM/camera on MediaTek platforms, not via network packet processing.\nAC:L - Triggering is deterministic once an allocation exceeds the domain size while cached_node is the anchor (empty domain or after freeing the top IOVA): the pfn_hi+1 wrap to 0 reliably makes the oversized alloc succeed, and the attacker controls buffer size and alloc/free sequencing.\nPR:L - On the highest-impact deployments (MediaTek Android phones with small per-device IOVA regions), unprivileged apps can request large DMA-mapped media/GPU buffers through standard device nodes without real root or init-namespace capabilities.\nUI:N - The attacking process alone issues the buffer allocations/DMA maps that hit the overflow path; no separate victim action is required.\nS:C - On MediaTek IOMMU, multiple IOVA regions share one page table and rely on software apertures for isolation; allocating below start_pfn installs translations into another device region\u0027s IOVA space, breaking the IOMMU/DMA isolation boundary between device groups.\nC:H - Cross-region PTE installation in the shared page table can redirect another device\u0027s DMA reads onto attacker-controlled buffers or expose other devices\u0027 memory via confused DMA mappings, yielding a high-impact disclosure primitive.\nI:H - The same out-of-aperture mapping can overwrite or collide with another master\u0027s IOVA translations in the shared pgtable, so device DMA writes land on the wrong physical pages \u2014 a high-integrity memory corruption primitive across the DMA isolation boundary.\nA:H - Conflicting IOVA translations and DMA to addresses outside the intended aperture reliably produce IOMMU faults, WARN_ONs in the page-table code, and kernel oopses/panics."
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:11:57.069Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c929a230c84441e400c32e7b7b4ab763711fb63e"
        },
        {
          "url": "https://git.kernel.org/stable/c/61cbf790e7329ed78877560be7136f0b911bba7f"
        },
        {
          "url": "https://git.kernel.org/stable/c/dcdb3ba7e2a8caae7bfefd603bc22fd0ce9a389c"
        }
      ],
      "title": "iommu/iova: Fix alloc iova overflows issue",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52910",
    "datePublished": "2024-08-21T06:10:51.337Z",
    "dateReserved": "2024-08-21T06:07:11.015Z",
    "dateUpdated": "2026-08-05T09:11:57.069Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

FKIE_CVE-2023-52910

CVE-2023-52910 (GCVE-0-2023-52910)

Tags

Sightings

Nomenclature

Related by attack behaviour