{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52790", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T15:19:24.241Z", "datePublished": "2024-05-21T15:31:06.319Z", "dateUpdated": "2026-08-05T09:11:25.655Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:11:25.655Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nswiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC\n\nLimit the free list length to the size of the IO TLB. Transient pool can be\nsmaller than IO_TLB_SEGSIZE, but the free list is initialized with the\nassumption that the total number of slots is a multiple of IO_TLB_SEGSIZE.\nAs a result, swiotlb_area_find_slots() may allocate slots past the end of\na transient IO TLB buffer." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable code is in the kernel DMA/swiotlb allocator, reached when drivers call dma_map/swiotlb_tbl_map_single for I/O (including NIC RX/TX on untrusted PCI devices), which requires local ability to stimulate device DMA rather than a network-bound protocol parser.\nAC:L - Once CONFIG_SWIOTLB_DYNAMIC is enabled and SWIOTLB is under pressure, the reporter showed TCP/IP workloads on an untrusted VF reliably create transient pools and hit the unaligned >=PAGE_SIZE path that overruns the buffer; the attacker can induce that load.\nPR:L - An unprivileged local user can trigger DMA mapping through ordinary network or storage I/O that causes drivers to bounce via swiotlb; no root or CAP_* beyond normal user access is required.\nUI:N - Exploitation does not require a victim to perform any action such as mounting a filesystem or opening a crafted file; generating I/O is sufficient.\nS:C - On the iommu_dma_map_page path for untrusted PCI devices, an overrun bounce address is passed to iommu_map, mapping physical pages outside the SWIOTLB pool into the device IOVA space and bypassing the IOMMU/DMA isolation boundary.\nC:H - Out-of-bounds slot metadata writes and bounce/DMA access past the transient pool expose adjacent kernel or host physical memory, yielding a high-impact disclosure primitive.\nI:H - The bug is a confirmed out-of-bounds write (CWE-787) into slots[] and past the TLB buffer, and device DMA to wrongly IOMMU-mapped pages enables arbitrary modification of adjacent memory and control-flow corruption.\nA:H - Overrunning the transient pool corrupts kernel memory and can crash or hang the system, as seen when the mis-sized bounce buffer is used for DMA and CPU-side bounce/memset." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "kernel/dma/swiotlb.c" ], "versions": [ { "version": "79636caad3618e2b38457f6e298c9b31ba82b489", "lessThan": "ce7612496a4ba6068bc68aa1fa9d947dadb4ad9b", "status": "affected", "versionType": "git" }, { "version": "79636caad3618e2b38457f6e298c9b31ba82b489", "lessThan": "53c87e846e335e3c18044c397cc35178163d7827", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "kernel/dma/swiotlb.c" ], "versions": [ { "version": "6.6", "status": "affected" }, { "version": "0", "lessThan": "6.6", "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": "6.6", "versionEndExcluding": "6.6.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.7" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ce7612496a4ba6068bc68aa1fa9d947dadb4ad9b" }, { "url": "https://git.kernel.org/stable/c/53c87e846e335e3c18044c397cc35178163d7827" } ], "title": "swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2023-52790", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-05-22T19:32:04.825201Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:23:14.167Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:36.050Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/ce7612496a4ba6068bc68aa1fa9d947dadb4ad9b", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/53c87e846e335e3c18044c397cc35178163d7827", "tags": [ "x_transferred" ] } ] } ] } }