CVE-2023-52766 (GCVE-0-2023-52766)
Vulnerability from cvelistv5 – Published: 2024-05-21 15:30 – Updated: 2026-08-05 09:11
VLAI
EPSS
VEX
Title
i3c: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler
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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-22 18:26 UTC
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 , < d23ad76f240c0f597b7a9eb79905d246f27d40df
(git)
Affected: 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 , < 8be39f66915b40d26ea2c18ba84b5c3d5da6809b (git) Affected: 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 , < 7c2b91b30d74d7c407118ad72502d4ca28af1af6 (git) Affected: 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 , < 4c86cb2321bd9c72d3b945ce7f747961beda8e65 (git) Affected: 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 , < 45a832f989e520095429589d5b01b0c65da9b574 (git) |
guessed | |
| 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) |
guessed |
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"title": "kernel: i3c: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52766.json",
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"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."
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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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.
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.
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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.
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