273 lines
18 KiB
JSON
273 lines
18 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-2024-27062",
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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": "2024-02-19T14:20:24.215Z",
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"datePublished": "2024-05-01T13:00:21.052Z",
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"dateUpdated": "2026-10-30T12:18:11.669Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:18:11.669Z"
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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\nnouveau: lock the client object tree.\n\nIt appears the client object tree has no locking unless I've missed\nsomething else. Fix races around adding/removing client objects,\nmostly vram bar mappings.\n\n 4562.099306] general protection fault, probably for non-canonical address 0x6677ed422bceb80c: 0000 [#1] PREEMPT SMP PTI\n[ 4562.099314] CPU: 2 PID: 23171 Comm: deqp-vk Not tainted 6.8.0-rc6+ #27\n[ 4562.099324] Hardware name: Gigabyte Technology Co., Ltd. Z390 I AORUS PRO WIFI/Z390 I AORUS PRO WIFI-CF, BIOS F8 11/05/2021\n[ 4562.099330] RIP: 0010:nvkm_object_search+0x1d/0x70 [nouveau]\n[ 4562.099503] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 0f 1f 44 00 00 48 89 f8 48 85 f6 74 39 48 8b 87 a0 00 00 00 48 85 c0 74 12 <48> 8b 48 f8 48 39 ce 73 15 48 8b 40 10 48 85 c0 75 ee 48 c7 c0 fe\n[ 4562.099506] RSP: 0000:ffffa94cc420bbf8 EFLAGS: 00010206\n[ 4562.099512] RAX: 6677ed422bceb814 RBX: ffff98108791f400 RCX: ffff9810f26b8f58\n[ 4562.099517] RDX: 0000000000000000 RSI: ffff9810f26b9158 RDI: ffff98108791f400\n[ 4562.099519] RBP: ffff9810f26b9158 R08: 0000000000000000 R09: 0000000000000000\n[ 4562.099521] R10: ffffa94cc420bc48 R11: 0000000000000001 R12: ffff9810f02a7cc0\n[ 4562.099526] R13: 0000000000000000 R14: 00000000000000ff R15: 0000000000000007\n[ 4562.099528] FS: 00007f629c5017c0(0000) GS:ffff98142c700000(0000) knlGS:0000000000000000\n[ 4562.099534] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 4562.099536] CR2: 00007f629a882000 CR3: 000000017019e004 CR4: 00000000003706f0\n[ 4562.099541] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 4562.099542] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 4562.099544] Call Trace:\n[ 4562.099555] <TASK>\n[ 4562.099573] ? die_addr+0x36/0x90\n[ 4562.099583] ? exc_general_protection+0x246/0x4a0\n[ 4562.099593] ? asm_exc_general_protection+0x26/0x30\n[ 4562.099600] ? nvkm_object_search+0x1d/0x70 [nouveau]\n[ 4562.099730] nvkm_ioctl+0xa1/0x250 [nouveau]\n[ 4562.099861] nvif_object_map_handle+0xc8/0x180 [nouveau]\n[ 4562.099986] nouveau_ttm_io_mem_reserve+0x122/0x270 [nouveau]\n[ 4562.100156] ? dma_resv_test_signaled+0x26/0xb0\n[ 4562.100163] ttm_bo_vm_fault_reserved+0x97/0x3c0 [ttm]\n[ 4562.100182] ? __mutex_unlock_slowpath+0x2a/0x270\n[ 4562.100189] nouveau_ttm_fault+0x69/0xb0 [nouveau]\n[ 4562.100356] __do_fault+0x32/0x150\n[ 4562.100362] do_fault+0x7c/0x560\n[ 4562.100369] __handle_mm_fault+0x800/0xc10\n[ 4562.100382] handle_mm_fault+0x17c/0x3e0\n[ 4562.100388] do_user_addr_fault+0x208/0x860\n[ 4562.100395] exc_page_fault+0x7f/0x200\n[ 4562.100402] asm_exc_page_fault+0x26/0x30\n[ 4562.100412] RIP: 0033:0x9b9870\n[ 4562.100419] Code: 85 a8 f7 ff ff 8b 8d 80 f7 ff ff 89 08 e9 18 f2 ff ff 0f 1f 84 00 00 00 00 00 44 89 32 e9 90 fa ff ff 0f 1f 84 00 00 00 00 00 <44> 89 32 e9 f8 f1 ff ff 0f 1f 84 00 00 00 00 00 66 44 89 32 e9 e7\n[ 4562.100422] RSP: 002b:00007fff9ba2dc70 EFLAGS: 00010246\n[ 4562.100426] RAX: 0000000000000004 RBX: 000000000dd65e10 RCX: 000000fff0000000\n[ 4562.100428] RDX: 00007f629a882000 RSI: 00007f629a882000 RDI: 0000000000000066\n[ 4562.100432] RBP: 00007fff9ba2e570 R08: 0000000000000000 R09: 0000000123ddf000\n[ 4562.100434] R10: 0000000000000001 R11: 0000000000000246 R12: 000000007fffffff\n[ 4562.100436] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\n[ 4562.100446] </TASK>\n[ 4562.100448] Modules linked in: nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables libcrc32c nfnetlink cmac bnep sunrpc iwlmvm intel_rapl_msr intel_rapl_common snd_sof_pci_intel_cnl x86_pkg_temp_thermal intel_powerclamp snd_sof_intel_hda_common mac80211 coretemp snd_soc_acpi_intel_match kvm_intel snd_soc_acpi snd_soc_hdac_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof_intel_hda_mlink \n---truncated---"
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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 vulnerable code is reached through the nouveau DRM device node — `DRM_NOUVEAU_NVIF` ioctls on `/dev/dri/renderD128` and page faults on mmap'd GEM buffer objects. No network or physical component is involved.\nAC:L - The attacker controls both sides of the race entirely within their own process — one thread issuing NVIF object NEW/DEL ioctls while another touches mmap'd VRAM BOs to drive `nouveau_ttm_io_mem_reserve()` → `nvkm_object_search()`; the three paths hold three different locks so no serialization exists. The race was hit unintentionally by a normal `deqp-vk` conformance run, confirming the window is trivially wide.\nPR:L - Only an open file descriptor on the nouveau render node is required; nouveau advertises `DRIVER_RENDER` and `nouveau_drm_ioctl()` dispatches the NVIF ioctl before `drm_ioctl()`, so not even DRM_AUTH/DRM_MASTER is checked. Any local user with GPU access — a normal desktop session user, an Android app, or a container with the render node exposed — qualifies.\nUI:N - The attacking process performs all steps itself: opening the render node, allocating and mmap'ing buffer objects, and spawning the racing threads. No victim action is needed.\nS:U - Corruption is confined to kernel memory within the same security authority; this is a standard local kernel privilege-escalation surface with no VM, IOMMU, or sandbox boundary crossed.\nC:H - A torn rb-tree traversal dereferences attacker-influenceable wild pointers (`rb_entry()` on garbage `node`), and a lookup that \"succeeds\" on a stale node returns a wrong/freed `nvkm_object` that `nvkm_ioctl_path()` then reads (`object->route`, `object->token`) and uses for `nvkm_ioctl_rd`, yielding arbitrary kernel-memory and MMIO disclosure.\nI:H - Unserialized concurrent `rb_insert_color()`/`rb_erase()` rebalancing writes through pointers of a corrupted tree, and a bogus object returned to `nvkm_ioctl_path()` is dispatched via `object->func->mthd/wr32/map` — an indirect call through a function pointer in potentially freed memory, giving control-flow hijack and arbitrary write potential.\nA:H - The reported failure is an immediately reproducible general protection fault on a non-canonical address in `nvkm_object_search()`, killing the task and leaving the GPU/kernel in an inconsistent state; it can be triggered repeatedly by any local user with render-node access."
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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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"product": "Linux",
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"vendor": "Linux",
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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/nouveau/include/nvkm/core/client.h",
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"drivers/gpu/drm/nouveau/nvkm/core/client.c",
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"drivers/gpu/drm/nouveau/nvkm/core/object.c"
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"version": "6.7.12",
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}
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],
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"title": "nouveau: lock the client object tree.",
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"timestamp": "2024-06-06T18:29:48.801156Z",
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"id": "CVE-2024-27062",
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