303 lines
14 KiB
JSON
303 lines
14 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-2023-52825",
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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": "2024-05-21T15:19:24.250Z",
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"datePublished": "2024-05-21T15:31:29.517Z",
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"dateUpdated": "2026-08-05T09:11:33.235Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T09:11:33.235Z"
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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/amdkfd: Fix a race condition of vram buffer unref in svm code\n\nprange->svm_bo unref can happen in both mmu callback and a callback after\nmigrate to system ram. Both are async call in different tasks. Sync svm_bo\nunref operation to avoid random \"use-after-free\"."
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}
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],
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"metrics": [
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{
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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{
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"lang": "en",
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"value": "AV:L - Reachable only via local /dev/kfd AMDKFD_IOC_SVM ioctls and process memory operations (munmap/page fault); the amdkfd SVM path is not exposed to remote network attackers.\nAC:L - The attacker controls both sides of the race—VRAM→RAM migration (SET_ATTR prefetch/CPU fault/eviction) and the MMU notifier unmap path that deferred-frees the range—and can retry concurrently from multiple threads.\nPR:L - /dev/kfd is accessible to unprivileged users in the render group or via seat uaccess, and AMDKFD_IOC_SVM requires no capabilities beyond opening that device.\nUI:N - Exploitation uses the attacker's own KFD file descriptor and address space; no action by another user is required.\nS:U - Impact is confined to the local kernel privilege boundary (standard local privilege escalation), with no VM escape or IOMMU/cross-authority boundary crossed.\nC:H - The bug is a use-after-free of svm_range_bo (containing work_structs, fences, and BO pointers); UAF of that object can be leveraged for arbitrary kernel memory disclosure.\nI:H - Double kref_put frees svm_range_bo while other paths may still use it, enabling heap reuse and control-flow hijack via workqueue/fence callbacks for arbitrary write/code execution.\nA:H - The same use-after-free/double-free reliably produces kernel oopses or panics even without a full exploit chain."
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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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{
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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/amd/amdkfd/kfd_svm.c"
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"drivers/gpu/drm/amd/amdkfd/kfd_svm.c"
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],
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{
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"version": "5.14",
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"status": "affected"
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{
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"version": "0",
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"lessThan": "5.14",
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"status": "unaffected",
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},
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{
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"version": "5.15.140",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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},
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{
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.3",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.7",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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"title": "drm/amdkfd: Fix a race condition of vram buffer unref in svm code",
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"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"
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"content": {
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"timestamp": "2024-05-29T17:19:26.593963Z",
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"id": "CVE-2023-52825",
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