{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52766", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T15:19:24.238Z", "datePublished": "2024-05-21T15:30:50.343Z", "dateUpdated": "2026-08-05T09:11:18.108Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:11:18.108Z" }, "descriptions": [ { "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->headers[i] access when i >= number of allocated\nring headers." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable path is the platform driver's hard-IRQ handler (i3c_hci_irq_handler → 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's 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->regs 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." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/i3c/master/mipi-i3c-hci/dma.c" ], "versions": [ { "version": "3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0", "lessThan": "d23ad76f240c0f597b7a9eb79905d246f27d40df", "status": "affected", "versionType": "git" }, { "version": "3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0", "lessThan": "8be39f66915b40d26ea2c18ba84b5c3d5da6809b", "status": "affected", "versionType": "git" }, { "version": "3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0", "lessThan": "7c2b91b30d74d7c407118ad72502d4ca28af1af6", "status": "affected", "versionType": "git" }, { "version": "3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0", "lessThan": "4c86cb2321bd9c72d3b945ce7f747961beda8e65", "status": "affected", "versionType": "git" }, { "version": "3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0", "lessThan": "45a832f989e520095429589d5b01b0c65da9b574", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/i3c/master/mipi-i3c-hci/dma.c" ], "versions": [ { "version": "5.0", "status": "affected" }, { "version": "0", "lessThan": "5.0", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.140", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.64", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5.13", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.3", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.15.140" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.1.64" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.5.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.6.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.7" } ] } ] } ], "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" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2023-52766", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-05-22T18:26:12.286527Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:23:28.810Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:35.533Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/d23ad76f240c0f597b7a9eb79905d246f27d40df", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/8be39f66915b40d26ea2c18ba84b5c3d5da6809b", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/7c2b91b30d74d7c407118ad72502d4ca28af1af6", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/4c86cb2321bd9c72d3b945ce7f747961beda8e65", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/45a832f989e520095429589d5b01b0c65da9b574", "tags": [ "x_transferred" ] } ] } ] } }