302 lines
15 KiB
JSON
302 lines
15 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2024-41060",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-07-12T12:17:45.627Z",
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"datePublished": "2024-07-29T14:57:22.499Z",
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"dateUpdated": "2026-08-05T11:35:05.718Z"
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},
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"cna": {
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:35:05.718Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/radeon: check bo_va->bo is non-NULL before using it\n\nThe call to radeon_vm_clear_freed might clear bo_va->bo, so\nwe have to check it before dereferencing it."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The bug is reached through the RADEON_GEM_VA ioctl on a local DRM device node (/dev/dri/renderD128 or card0), raced against DRM_IOCTL_GEM_CLOSE on the same fd. No network or physical access is involved.\nAC:L - The attacker owns both sides of the race — one thread issues GEM_VA MAP, another issues GEM_CLOSE — and radeon_vm_bo_set_addr() unreserves the BO and then performs long page-table allocation and GPU IB submission before radeon_gem_va_update_vm() runs, leaving a very wide, reliably winnable window.\nPR:L - RADEON_GEM_VA and GEM_CLOSE are both DRM_RENDER_ALLOW and drm_ioctl bypasses DRM_AUTH for render clients, so any local unprivileged user (or containerized/sandboxed process handed a render node) can reach the path with no capabilities.\nUI:N - The attacker drives the entire sequence from its own two threads on a self-opened DRM fd; no victim action or cooperation is needed.\nS:U - The corruption stays within the kernel's own security authority — a standard local kernel memory-safety bug, not a VM, IOMMU, or hypervisor boundary crossing.\nC:H - This is a use-after-free of the radeon_bo_va slab object; with the freed slot refilled, bo_va->bo->tbo.resource supplies mem->start, which is programmed as a raw physical address into GPU page tables, giving GPU-side reads of arbitrary physical memory.\nI:H - The freed object is written through by radeon_vm_bo_update() via list_del()/list_add() on bo_va->vm_status and bo_va->flags, and bo_va->vm is dereferenced for mutex_unlock(), yielding unlink/write primitives plus attacker-influenced GPU page-table entries.\nA:H - In the common case the freed bo_va still holds the NULL written by radeon_bo_unref(), so bo_va->bo->tbo.resource is a NULL-pointer dereference producing an immediate kernel oops, and any unlucky slab reuse panics on corrupted list pointers."
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}
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]
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}
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],
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"affected": [
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpu/drm/radeon/radeon_gem.c"
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"version": "0",
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"version": "6.6.42",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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