Vulnerability-Lookup

FKIE_CVE-2023-52766

Vulnerability from fkie_nvd - Published: 2024-05-21 16:15 - Updated: 2026-08-04 10:18

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: i3c: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler Do not loop over ring headers in hci_dma_irq_handler() that are not allocated and enabled in hci_dma_init(). Otherwise out of bounds access will occur from rings->headers[i] access when i >= number of allocated ring headers.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/45a832f989e520095429589d5b01b0c65da9b574	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4c86cb2321bd9c72d3b945ce7f747961beda8e65	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7c2b91b30d74d7c407118ad72502d4ca28af1af6	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8be39f66915b40d26ea2c18ba84b5c3d5da6809b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d23ad76f240c0f597b7a9eb79905d246f27d40df	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/45a832f989e520095429589d5b01b0c65da9b574	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/4c86cb2321bd9c72d3b945ce7f747961beda8e65	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/7c2b91b30d74d7c407118ad72502d4ca28af1af6	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/8be39f66915b40d26ea2c18ba84b5c3d5da6809b	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/d23ad76f240c0f597b7a9eb79905d246f27d40df	Patch

Impacted products

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

JSON

To clipboard

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}

CVE-2023-52766 (GCVE-0-2023-52766)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:30 – Updated: 2026-08-05 09:11

Title

i3c: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler

Summary

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-22 18:26 UTC

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/d23ad76f240c0f597…
https://git.kernel.org/stable/c/8be39f66915b40d26…
https://git.kernel.org/stable/c/7c2b91b30d74d7c40…
https://git.kernel.org/stable/c/4c86cb2321bd9c72d…
https://git.kernel.org/stable/c/45a832f989e520095…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 , < d23ad76f240c0f597b7a9eb79905d246f27d40df (git) Affected: 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 , < 8be39f66915b40d26ea2c18ba84b5c3d5da6809b (git) Affected: 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 , < 7c2b91b30d74d7c407118ad72502d4ca28af1af6 (git) Affected: 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 , < 4c86cb2321bd9c72d3b945ce7f747961beda8e65 (git) Affected: 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 , < 45a832f989e520095429589d5b01b0c65da9b574 (git)
Linux	Linux	Affected: 5.0 Unaffected: 0 , < 5.0 (semver) Unaffected: 5.15.140 , ≤ 5.15.* (semver) Unaffected: 6.1.64 , ≤ 6.1.* (semver) Unaffected: 6.5.13 , ≤ 6.5.* (semver) Unaffected: 6.6.3 , ≤ 6.6.* (semver) Unaffected: 6.7 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler\n\nDo not loop over ring headers in hci_dma_irq_handler() that are not\nallocated and enabled in hci_dma_init(). Otherwise out of bounds access\nwill occur from rings-\u003eheaders[i] access when i \u003e= number of allocated\nring headers."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable path is the platform driver\u0027s hard-IRQ handler (i3c_hci_irq_handler \u2192 hci_dma_irq_handler), reached when local I3C/I2C bus activity raises host-controller ring interrupts. There is no network or adjacent-link packet path into this HCI master driver.\nAC:L - On multi-ring-capable HCI hardware the interrupt mask can present bits beyond the single software-enabled ring, and a local attacker can reliably induce those IRQs via I3C/I2C client transfers; no attacker-uncontrollable race or layout precondition is required to hit the OOB once those bits are set.\nPR:L - The IRQ handler itself has no capability check, and bus traffic that raises ring interrupts is reachable through ordinary local I3C/I2C client paths (sensors, i2c-adapter users) without real init-namespace root or CAP_SYS_MODULE.\nUI:N - Once the attacker can generate the relevant bus traffic, the host controller delivers the interrupt and the handler runs with no separate victim action required.\nS:U - The OOB access and resulting MMIO/memory corruption stay inside the host kernel\u0027s I3C HCI authority and do not cross a VM, IOMMU, or sandbox boundary.\nC:H - The handler out-of-bounds-reads adjacent heap as struct hci_rh_data and then performs MMIO reads and IBI/xfer processing through those corrupted pointers, which is a high-impact disclosure/memory-corruption read primitive.\nI:H - The same corrupted rh-\u003eregs is used for rh_reg_write(), and hci_dma_xfer_done()/hci_dma_process_ibi() write through OOB-sourced pointers, yielding an arbitrary MMIO/memory write primitive exploitable for control-flow hijacking.\nA:H - Dereferencing an out-of-bounds or garbage rh in hard-IRQ context causes kernel oops/panic or persistent controller failure, which is full availability loss."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:11:18.108Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d23ad76f240c0f597b7a9eb79905d246f27d40df"
        },
        {
          "url": "https://git.kernel.org/stable/c/8be39f66915b40d26ea2c18ba84b5c3d5da6809b"
        },
        {
          "url": "https://git.kernel.org/stable/c/7c2b91b30d74d7c407118ad72502d4ca28af1af6"
        },
        {
          "url": "https://git.kernel.org/stable/c/4c86cb2321bd9c72d3b945ce7f747961beda8e65"
        },
        {
          "url": "https://git.kernel.org/stable/c/45a832f989e520095429589d5b01b0c65da9b574"
        }
      ],
      "title": "i3c: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52766",
    "datePublished": "2024-05-21T15:30:50.343Z",
    "dateReserved": "2024-05-21T15:19:24.238Z",
    "dateUpdated": "2026-08-05T09:11:18.108Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

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Nomenclature

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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.
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FKIE_CVE-2023-52766

CVE-2023-52766 (GCVE-0-2023-52766)

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