CVE-2024-27062

In the Linux kernel, the following vulnerability has been resolved:
nouveau: lock the client object tree. It appears the client object tree has
no locking unless I’ve missed something else. Fix races around
adding/removing client objects, mostly vram bar mappings. 4562.099306]
general protection fault, probably for non-canonical address
0x6677ed422bceb80c: 0000 [#1] PREEMPT SMP PTI [ 4562.099314] CPU: 2 PID:
23171 Comm: deqp-vk Not tainted 6.8.0-rc6+ #27 [ 4562.099324] Hardware
name: Gigabyte Technology Co., Ltd. Z390 I AORUS PRO WIFI/Z390 I AORUS PRO
WIFI-CF, BIOS F8 11/05/2021 [ 4562.099330] RIP:
0010:nvkm_object_search+0x1d/0x70 [nouveau] [ 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 [ 4562.099506] RSP:
0000:ffffa94cc420bbf8 EFLAGS: 00010206 [ 4562.099512] RAX: 6677ed422bceb814
RBX: ffff98108791f400 RCX: ffff9810f26b8f58 [ 4562.099517] RDX:
0000000000000000 RSI: ffff9810f26b9158 RDI: ffff98108791f400 [ 4562.099519]
RBP: ffff9810f26b9158 R08: 0000000000000000 R09: 0000000000000000 [
4562.099521] R10: ffffa94cc420bc48 R11: 0000000000000001 R12:
ffff9810f02a7cc0 [ 4562.099526] R13: 0000000000000000 R14: 00000000000000ff
R15: 0000000000000007 [ 4562.099528] FS: 00007f629c5017c0(0000)
GS:ffff98142c700000(0000) knlGS:0000000000000000 [ 4562.099534] CS: 0010
DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4562.099536] CR2:
00007f629a882000 CR3: 000000017019e004 CR4: 00000000003706f0 [ 4562.099541]
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [
4562.099542] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400 [ 4562.099544] Call Trace: [ 4562.099555] <TASK> [
4562.099573] ? die_addr+0x36/0x90 [ 4562.099583] ?
exc_general_protection+0x246/0x4a0 [ 4562.099593] ?
asm_exc_general_protection+0x26/0x30 [ 4562.099600] ?
nvkm_object_search+0x1d/0x70 [nouveau] [ 4562.099730] nvkm_ioctl+0xa1/0x250
[nouveau] [ 4562.099861] nvif_object_map_handle+0xc8/0x180 [nouveau] [
4562.099986] nouveau_ttm_io_mem_reserve+0x122/0x270 [nouveau] [
4562.100156] ? dma_resv_test_signaled+0x26/0xb0 [ 4562.100163]
ttm_bo_vm_fault_reserved+0x97/0x3c0 [ttm] [ 4562.100182] ?
__mutex_unlock_slowpath+0x2a/0x270 [ 4562.100189]
nouveau_ttm_fault+0x69/0xb0 [nouveau] [ 4562.100356] __do_fault+0x32/0x150
[ 4562.100362] do_fault+0x7c/0x560 [ 4562.100369]
__handle_mm_fault+0x800/0xc10 [ 4562.100382] handle_mm_fault+0x17c/0x3e0 [
4562.100388] do_user_addr_fault+0x208/0x860 [ 4562.100395]
exc_page_fault+0x7f/0x200 [ 4562.100402] asm_exc_page_fault+0x26/0x30 [
4562.100412] RIP: 0033:0x9b9870 [ 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 [ 4562.100422] RSP: 002b:00007fff9ba2dc70 EFLAGS:
00010246 [ 4562.100426] RAX: 0000000000000004 RBX: 000000000dd65e10 RCX:
000000fff0000000 [ 4562.100428] RDX: 00007f629a882000 RSI: 00007f629a882000
RDI: 0000000000000066 [ 4562.100432] RBP: 00007fff9ba2e570 R08:
0000000000000000 R09: 0000000123ddf000 [ 4562.100434] R10: 0000000000000001
R11: 0000000000000246 R12: 000000007fffffff [ 4562.100436] R13:
0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 4562.100446]
</TASK> [ 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 —truncated—