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CVE-2024-36884 Null pointer dereference

Routine
Remediate Within 6 Months

CVE Information

Original CVE data

Published:
Updated:

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)

CWE: CWE-476
CVSS v2-
CVSS v35.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
https://git.kernel.org/stable/c/e83de8f05b998e227b48cdeea54cba4c9d66d3aa
https://git.kernel.org/stable/c/65ade5653f5ab5a21635e51d0c65e95f490f5b6f
Affected Vendors

Linux - (1)

Basic Analysis

Common vulnerability metrics

Vulnerabilty type as detected by PRIOnengine

Null pointer dereference

CVSS Scores as calculated by PRIOnengine
CVSS v22.1
AV:L/AC:L/AU:N/C:N/I:N/A:P
CVSS v38.4
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
MITRE CWE Top 25

Vulnerability weakness type is in the top 25 CWEs according to MITRE. View Mitre Top 25 CWEs

Exploits

No exploit code is reported to exist.

Active Exploitation

Vulnerability is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. See the KEV Catalog

Social Network Activity

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Threat Actor Activity

No sightings of the vulnerability within threat reports.

Cybersecurity Frameworks

How the vulnerability maps against various cybersecurity frameworks

T1499.004 - Endpoint Denial of Service (Application or System Exploitation)
T1203 - Exploitation for Client Execution
T1059 - Command and Scripting Interpreter

Compliance Impact

How the submited vulnerability affects compliance

PCI DSS v3.2.1-6.5.2 - Buffer Overflows

Web Application Security Frameworks

Applicable if the issue likely affects a web application

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