{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-53071", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-11-19T17:17:24.976Z", "datePublished": "2024-11-19T17:22:38.327Z", "dateUpdated": "2026-05-11T20:50:17.522Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:50:17.522Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Be stricter about IO mapping flags\n\nThe current panthor_device_mmap_io() implementation has two issues:\n\n1. For mapping DRM_PANTHOR_USER_FLUSH_ID_MMIO_OFFSET,\n panthor_device_mmap_io() bails if VM_WRITE is set, but does not clear\n VM_MAYWRITE. That means userspace can use mprotect() to make the mapping\n writable later on. This is a classic Linux driver gotcha.\n I don't think this actually has any impact in practice:\n When the GPU is powered, writes to the FLUSH_ID seem to be ignored; and\n when the GPU is not powered, the dummy_latest_flush page provided by the\n driver is deliberately designed to not do any flushes, so the only thing\n writing to the dummy_latest_flush could achieve would be to make *more*\n flushes happen.\n\n2. panthor_device_mmap_io() does not block MAP_PRIVATE mappings (which are\n mappings without the VM_SHARED flag).\n MAP_PRIVATE in combination with VM_MAYWRITE indicates that the VMA has\n copy-on-write semantics, which for VM_PFNMAP are semi-supported but\n fairly cursed.\n In particular, in such a mapping, the driver can only install PTEs\n during mmap() by calling remap_pfn_range() (because remap_pfn_range()\n wants to **store the physical address of the mapped physical memory into\n the vm_pgoff of the VMA**); installing PTEs later on with a fault\n handler (as panthor does) is not supported in private mappings, and so\n if you try to fault in such a mapping, vmf_insert_pfn_prot() splats when\n it hits a BUG() check.\n\nFix it by clearing the VM_MAYWRITE flag (userspace writing to the FLUSH_ID\ndoesn't make sense) and requiring VM_SHARED (copy-on-write semantics for\nthe FLUSH_ID don't make sense).\n\nReproducers for both scenarios are in the notes of my patch on the mailing\nlist; I tested that these bugs exist on a Rock 5B machine.\n\nNote that I only compile-tested the patch, I haven't tested it; I don't\nhave a working kernel build setup for the test machine yet. Please test it\nbefore applying it." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/panthor/panthor_device.c" ], "versions": [ { "version": "5fe909cae118a757a77afb37174b99436a36d2e2", "lessThan": "2604afd65043e8f9d4be036cb1242adf6b5723cf", "status": "affected", "versionType": "git" }, { "version": "5fe909cae118a757a77afb37174b99436a36d2e2", "lessThan": "f432a1621f049bb207e78363d9d0e3c6fa2da5db", "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/gpu/drm/panthor/panthor_device.c" ], "versions": [ { "version": "6.10", "status": "affected" }, { "version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.8", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "6.10", "versionEndExcluding": "6.11.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/2604afd65043e8f9d4be036cb1242adf6b5723cf" }, { "url": "https://git.kernel.org/stable/c/f432a1621f049bb207e78363d9d0e3c6fa2da5db" } ], "title": "drm/panthor: Be stricter about IO mapping flags", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-53071", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:12:23.550632Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "description": "CWE-noinfo Not enough information" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:17:16.169Z" } } ] } }