linux-cve-announce - CVE-2024-58018: nvkm: correctly calculate the available space of the GSP cmdq buffer

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Message-ID: <2025022657-CVE-2024-58018-605c@gregkh>
Date: Wed, 26 Feb 2025 18:11:12 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-58018: nvkm: correctly calculate the available space of the GSP cmdq buffer

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

nvkm: correctly calculate the available space of the GSP cmdq buffer

r535_gsp_cmdq_push() waits for the available page in the GSP cmdq
buffer when handling a large RPC request. When it sees at least one
available page in the cmdq, it quits the waiting with the amount of
free buffer pages in the queue.

Unfortunately, it always takes the [write pointer, buf_size) as
available buffer pages before rolling back and wrongly calculates the
size of the data should be copied. Thus, it can overwrite the RPC
request that GSP is currently reading, which causes GSP hang due
to corrupted RPC request:

[  549.209389] ------------[ cut here ]------------
[  549.214010] WARNING: CPU: 8 PID: 6314 at drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:116 r535_gsp_msgq_wait+0xd0/0x190 [nvkm]
[  549.225678] Modules linked in: nvkm(E+) gsp_log(E) snd_seq_dummy(E) snd_hrtimer(E) snd_seq(E) snd_timer(E) snd_seq_device(E) snd(E) soundcore(E) rfkill(E) qrtr(E) vfat(E) fat(E) ipmi_ssif(E) amd_atl(E) intel_rapl_msr(E) intel_rapl_common(E) mlx5_ib(E) amd64_edac(E) edac_mce_amd(E) kvm_amd(E) ib_uverbs(E) kvm(E) ib_core(E) acpi_ipmi(E) ipmi_si(E) mxm_wmi(E) ipmi_devintf(E) rapl(E) i2c_piix4(E) wmi_bmof(E) joydev(E) ptdma(E) acpi_cpufreq(E) k10temp(E) pcspkr(E) ipmi_msghandler(E) xfs(E) libcrc32c(E) ast(E) i2c_algo_bit(E) crct10dif_pclmul(E) drm_shmem_helper(E) nvme_tcp(E) crc32_pclmul(E) ahci(E) drm_kms_helper(E) libahci(E) nvme_fabrics(E) crc32c_intel(E) nvme(E) cdc_ether(E) mlx5_core(E) nvme_core(E) usbnet(E) drm(E) libata(E) ccp(E) ghash_clmulni_intel(E) mii(E) t10_pi(E) mlxfw(E) sp5100_tco(E) psample(E) pci_hyperv_intf(E) wmi(E) dm_multipath(E) sunrpc(E) dm_mirror(E) dm_region_hash(E) dm_log(E) dm_mod(E) be2iscsi(E) bnx2i(E) cnic(E) uio(E) cxgb4i(E) cxgb4(E) tls(E) libcxgbi(E) libcxgb(E) qla4xxx(E)
[  549.225752]  iscsi_boot_sysfs(E) iscsi_tcp(E) libiscsi_tcp(E) libiscsi(E) scsi_transport_iscsi(E) fuse(E) [last unloaded: gsp_log(E)]
[  549.326293] CPU: 8 PID: 6314 Comm: insmod Tainted: G            E      6.9.0-rc6+ #1
[  549.334039] Hardware name: ASRockRack 1U1G-MILAN/N/ROMED8-NL, BIOS L3.12E 09/06/2022
[  549.341781] RIP: 0010:r535_gsp_msgq_wait+0xd0/0x190 [nvkm]
[  549.347343] Code: 08 00 00 89 da c1 e2 0c 48 8d ac 11 00 10 00 00 48 8b 0c 24 48 85 c9 74 1f c1 e0 0c 4c 8d 6d 30 83 e8 30 89 01 e9 68 ff ff ff <0f> 0b 49 c7 c5 92 ff ff ff e9 5a ff ff ff ba ff ff ff ff be c0 0c
[  549.366090] RSP: 0018:ffffacbccaaeb7d0 EFLAGS: 00010246
[  549.371315] RAX: 0000000000000000 RBX: 0000000000000012 RCX: 0000000000923e28
[  549.378451] RDX: 0000000000000000 RSI: 0000000055555554 RDI: ffffacbccaaeb730
[  549.385590] RBP: 0000000000000001 R08: ffff8bd14d235f70 R09: ffff8bd14d235f70
[  549.392721] R10: 0000000000000002 R11: ffff8bd14d233864 R12: 0000000000000020
[  549.399854] R13: ffffacbccaaeb818 R14: 0000000000000020 R15: ffff8bb298c67000
[  549.406988] FS:  00007f5179244740(0000) GS:ffff8bd14d200000(0000) knlGS:0000000000000000
[  549.415076] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  549.420829] CR2: 00007fa844000010 CR3: 00000001567dc005 CR4: 0000000000770ef0
[  549.427963] PKRU: 55555554
[  549.430672] Call Trace:
[  549.433126]  <TASK>
[  549.435233]  ? __warn+0x7f/0x130
[  549.438473]  ? r535_gsp_msgq_wait+0xd0/0x190 [nvkm]
[  549.443426]  ? report_bug+0x18a/0x1a0
[  549.447098]  ? handle_bug+0x3c/0x70
[  549.450589]  ? exc_invalid_op+0x14/0x70
[  549.454430]  ? asm_exc_invalid_op+0x16/0x20
[  549.458619]  ? r535_gsp_msgq_wait+0xd0/0x190 [nvkm]
[  549.463565]  r535_gsp_msg_recv+0x46/0x230 [nvkm]
[  549.468257]  r535_gsp_rpc_push+0x106/0x160 [nvkm]
[  549.473033]  r535_gsp_rpc_rm_ctrl_push+0x40/0x130 [nvkm]
[  549.478422]  nvidia_grid_init_vgpu_types+0xbc/0xe0 [nvkm]
[  549.483899]  nvidia_grid_init+0xb1/0xd0 [nvkm]
[  549.488420]  ? srso_alias_return_thunk+0x5/0xfbef5
[  549.493213]  nvkm_device_pci_probe+0x305/0x420 [nvkm]
[  549.498338]  local_pci_probe+0x46/0xa0
[  549.502096]  pci_call_probe+0x56/0x170
[  549.505851]  pci_device_probe+0x79/0xf0
[  549.509690]  ? driver_sysfs_add+0x59/0xc0
[  549.513702]  really_probe+0xd9/0x380
[  549.517282]  __driver_probe_device+0x78/0x150
[  549.521640]  driver_probe_device+0x1e/0x90
[  549.525746]  __driver_attach+0xd2/0x1c0
[  549.529594]  ? __pfx___driver_attach+0x10/0x10
[  549.534045]  bus_for_each_dev+0x78/0xd0
[  549.537893]  bus_add_driver+0x112/0x210
[  549.541750]  driver_register+0x5c/0x120
[  549.545596]  ? __pfx_nvkm_init+0x10/0x10 [nvkm]
[  549.550224]  do_one_initcall+0x44/0x300
[  549.554063]  ? do_init_module+0x23/0x240
[  549.557989]  do_init_module+0x64/0x240

Calculate the available buffer page before rolling back based on
the result from the waiting.

The Linux kernel CVE team has assigned CVE-2024-58018 to this issue.


Affected and fixed versions
===========================

	Fixed in 6.12.14 with commit 56e6c7f6d2a6b4e0aae0528c502e56825bb40598
	Fixed in 6.13.3 with commit 6b6b75728c86f60c1fc596f0d4542427d0e6065b
	Fixed in 6.14-rc1 with commit 01ed662bdd6fce4f59c1804b334610d710d79fa0

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2024-58018
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/56e6c7f6d2a6b4e0aae0528c502e56825bb40598
	https://git.kernel.org/stable/c/6b6b75728c86f60c1fc596f0d4542427d0e6065b
	https://git.kernel.org/stable/c/01ed662bdd6fce4f59c1804b334610d710d79fa0