{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52801", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T15:19:24.247Z", "datePublished": "2024-05-21T15:31:13.700Z", "dateUpdated": "2026-08-05T09:11:28.903Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:11:28.903Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Fix missing update of domains_itree after splitting iopt_area\n\nIn iopt_area_split(), if the original iopt_area has filled a domain and is\nlinked to domains_itree, pages_nodes have to be properly\nreinserted. Otherwise the domains_itree becomes corrupted and we will UAF." } ], "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 bug is reached only through local ioctls on /dev/iommu or /dev/vfio/vfio (VFIO_IOMMU_UNMAP_DMA → iopt_cut_iova → iopt_area_split); there is no network or adjacent-network path.\nAC:L - The attacker fully controls the preconditions—disable large pages (VFIO_TYPE1_IOMMU or IOMMU_OPTION_HUGE_PAGES), map an IOVA range with a filled domain, then partial-unmap to force the split—so the domains_itree UAF is deterministic with no race or external condition.\nPR:L - iommufd_fops_open() has no capability check; access is only DAC on /dev/iommu (0660) or /dev/vfio/vfio (0666), routinely granted to unprivileged qemu/libvirt passthrough users, matching other iommufd CVEs scored PR:L.\nUI:N - The full map/set-iommu/partial-unmap sequence is issued by the attacker's own process with no victim interaction required.\nS:C - domains_itree tracks which iopt_areas hold DMA-mapped PFNs in live iommu_domains; leaving a freed area linked and then walking/removing from that tree corrupts IOMMU mapping bookkeeping and can unpin or mis-resolve pages still device-mapped, defeating the DMA isolation boundary.\nC:H - The commit documents a use-after-free on the freed iopt_area still linked in domains_itree; UAF of a sprayable kzalloc object enables arbitrary kernel memory disclosure, and corrupted domain PFN lookup can expose host pages to device DMA.\nI:H - The same UAF/tree corruption yields write primitives via interval-tree remove/insert on attacker-reclaimed memory and broken unpin/unmap of IOMMU-backed pages, enabling control-flow hijack and integrity compromise.\nA:H - Use-after-free on domains_itree walks causes kernel oops/panic, and interval-tree operations on a dangling freed node can hang or crash subsequent iommufd unmap/destroy paths." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/iommu/iommufd/io_pagetable.c" ], "versions": [ { "version": "51fe6141f0f64ae0bbc096a41a07572273e8c0ef", "lessThan": "836db2e7e4565d8218923b3552304a1637e2f28d", "status": "affected", "versionType": "git" }, { "version": "51fe6141f0f64ae0bbc096a41a07572273e8c0ef", "lessThan": "fcb32111f01ddf3cbd04644cde1773428e31de6a", "status": "affected", "versionType": "git" }, { "version": "51fe6141f0f64ae0bbc096a41a07572273e8c0ef", "lessThan": "e7250ab7ca4998fe026f2149805b03e09dc32498", "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/iommu/iommufd/io_pagetable.c" ], "versions": [ { "version": "6.2", "status": "affected" }, { "version": "0", "lessThan": "6.2", "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": "6.2", "versionEndExcluding": "6.5.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.7" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/836db2e7e4565d8218923b3552304a1637e2f28d" }, { "url": "https://git.kernel.org/stable/c/fcb32111f01ddf3cbd04644cde1773428e31de6a" }, { "url": "https://git.kernel.org/stable/c/e7250ab7ca4998fe026f2149805b03e09dc32498" } ], "title": "iommufd: Fix missing update of domains_itree after splitting iopt_area", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-284", "lang": "en", "description": "CWE-284 Improper Access Control" } ] } ], "affected": [ { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "51fe6141f0f6", "status": "affected", "lessThan": "836db2e7e456", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "51fe6141f0f6", "status": "affected", "lessThan": "fcb32111f01d", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "51fe6141f0f6", "status": "affected", "lessThan": "e7250ab7ca49", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "6..2", "status": "affected" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "0", "status": "unaffected", "lessThan": "6.2", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "6.5.13", "status": "unaffected", "lessThanOrEqual": "6.5.*", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "6.6.3", "status": "unaffected", "lessThanOrEqual": "6.6.*", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "6.7", "status": "unaffected" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-05-24T15:13:11.142898Z", "id": "CVE-2023-52801", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T19:19:30.119Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:35.602Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/836db2e7e4565d8218923b3552304a1637e2f28d", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/fcb32111f01ddf3cbd04644cde1773428e31de6a", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e7250ab7ca4998fe026f2149805b03e09dc32498", "tags": [ "x_transferred" ] } ] } ] } }