| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-36884: iommu/arm-smmu: Use the correct type in nvidia_smmu_context_fault() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| iommu/arm-smmu: Use the correct type in nvidia_smmu_context_fault() |
| |
| This was missed because of the function pointer indirection. |
| |
| nvidia_smmu_context_fault() is also installed as a irq function, and the |
| 'void *' was changed to a struct arm_smmu_domain. Since the iommu_domain |
| is embedded at a non-zero offset this causes nvidia_smmu_context_fault() |
| to miscompute the offset. Fixup the types. |
| |
| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000120 |
| Mem abort info: |
| ESR = 0x0000000096000004 |
| EC = 0x25: DABT (current EL), IL = 32 bits |
| SET = 0, FnV = 0 |
| EA = 0, S1PTW = 0 |
| FSC = 0x04: level 0 translation fault |
| Data abort info: |
| ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 |
| CM = 0, WnR = 0, TnD = 0, TagAccess = 0 |
| GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 |
| user pgtable: 4k pages, 48-bit VAs, pgdp=0000000107c9f000 |
| [0000000000000120] pgd=0000000000000000, p4d=0000000000000000 |
| Internal error: Oops: 0000000096000004 [#1] SMP |
| Modules linked in: |
| CPU: 1 PID: 47 Comm: kworker/u25:0 Not tainted 6.9.0-0.rc7.58.eln136.aarch64 #1 |
| Hardware name: Unknown NVIDIA Jetson Orin NX/NVIDIA Jetson Orin NX, BIOS 3.1-32827747 03/19/2023 |
| Workqueue: events_unbound deferred_probe_work_func |
| pstate: 604000c9 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) |
| pc : nvidia_smmu_context_fault+0x1c/0x158 |
| lr : __free_irq+0x1d4/0x2e8 |
| sp : ffff80008044b6f0 |
| x29: ffff80008044b6f0 x28: ffff000080a60b18 x27: ffffd32b5172e970 |
| x26: 0000000000000000 x25: ffff0000802f5aac x24: ffff0000802f5a30 |
| x23: ffff0000802f5b60 x22: 0000000000000057 x21: 0000000000000000 |
| x20: ffff0000802f5a00 x19: ffff000087d4cd80 x18: ffffffffffffffff |
| x17: 6234362066666666 x16: 6630303078302d30 x15: ffff00008156d888 |
| x14: 0000000000000000 x13: ffff0000801db910 x12: ffff00008156d6d0 |
| x11: 0000000000000003 x10: ffff0000801db918 x9 : ffffd32b50f94d9c |
| x8 : 1fffe0001032fda1 x7 : ffff00008197ed00 x6 : 000000000000000f |
| x5 : 000000000000010e x4 : 000000000000010e x3 : 0000000000000000 |
| x2 : ffffd32b51720cd8 x1 : ffff000087e6f700 x0 : 0000000000000057 |
| Call trace: |
| nvidia_smmu_context_fault+0x1c/0x158 |
| __free_irq+0x1d4/0x2e8 |
| free_irq+0x3c/0x80 |
| devm_free_irq+0x64/0xa8 |
| arm_smmu_domain_free+0xc4/0x158 |
| iommu_domain_free+0x44/0xa0 |
| iommu_deinit_device+0xd0/0xf8 |
| __iommu_group_remove_device+0xcc/0xe0 |
| iommu_bus_notifier+0x64/0xa8 |
| notifier_call_chain+0x78/0x148 |
| blocking_notifier_call_chain+0x4c/0x90 |
| bus_notify+0x44/0x70 |
| device_del+0x264/0x3e8 |
| pci_remove_bus_device+0x84/0x120 |
| pci_remove_root_bus+0x5c/0xc0 |
| dw_pcie_host_deinit+0x38/0xe0 |
| tegra_pcie_config_rp+0xc0/0x1f0 |
| tegra_pcie_dw_probe+0x34c/0x700 |
| platform_probe+0x70/0xe8 |
| really_probe+0xc8/0x3a0 |
| __driver_probe_device+0x84/0x160 |
| driver_probe_device+0x44/0x130 |
| __device_attach_driver+0xc4/0x170 |
| bus_for_each_drv+0x90/0x100 |
| __device_attach+0xa8/0x1c8 |
| device_initial_probe+0x1c/0x30 |
| bus_probe_device+0xb0/0xc0 |
| deferred_probe_work_func+0xbc/0x120 |
| process_one_work+0x194/0x490 |
| worker_thread+0x284/0x3b0 |
| kthread+0xf4/0x108 |
| ret_from_fork+0x10/0x20 |
| Code: a9b97bfd 910003fd a9025bf5 f85a0035 (b94122a1) |
| |
| The Linux kernel CVE team has assigned CVE-2024-36884 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.8 with commit e0976331ad114af8e379e18483c346c6c79ca858 and fixed in 6.8.10 with commit e83de8f05b998e227b48cdeea54cba4c9d66d3aa |
| Issue introduced in 6.8 with commit e0976331ad114af8e379e18483c346c6c79ca858 and fixed in 6.9 with commit 65ade5653f5ab5a21635e51d0c65e95f490f5b6f |
| |
| 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-2024-36884 |
| 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/iommu/arm/arm-smmu/arm-smmu-nvidia.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/e83de8f05b998e227b48cdeea54cba4c9d66d3aa |
| https://git.kernel.org/stable/c/65ade5653f5ab5a21635e51d0c65e95f490f5b6f |
