CVE-2024-56568

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-56568
In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Defer probe of clients after smmu device bound Null pointer dereference occurs due to a race between smmu driver probe and client driver probe, when of_dma_configure() for client is called after the iommu_device_register() for smmu driver probe has executed but before the driver_bound() for smmu driver has been called. Following is how the race occurs: T1:Smmu device probe T2: Client device probe really_probe() arm_smmu_device_probe() iommu_device_register() really_probe() platform_dma_configure() of_dma_configure() of_dma_configure_id() of_iommu_configure() iommu_probe_device() iommu_init_device() arm_smmu_probe_device() arm_smmu_get_by_fwnode() driver_find_device_by_fwnode() driver_find_device() next_device() klist_next() /* null ptr assigned to smmu */ /* null ptr dereference while smmu->streamid_mask */ driver_bound() klist_add_tail() When this null smmu pointer is dereferenced later in arm_smmu_probe_device, the device crashes. Fix this by deferring the probe of the client device until the smmu device has bound to the arm smmu driver. [will: Add comment]

4.7 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/229e6ee43d2a160a1592b83aad620d6027084aad Patch
https://git.kernel.org/stable/c/4a9485918a042e3114890dfbe19839a1897f8b2c Patch
https://git.kernel.org/stable/c/5018696b19bc6c021e934a8a59f4b1dd8c0ac9f8 Patch
https://git.kernel.org/stable/c/c2527d07c7e9cda2c6165d5edccf74752baac1b0 Patch
https://git.kernel.org/stable/c/dc02407ea952e20c544a078a6be2e6f008327973 Patch
https://git.kernel.org/stable/c/f8f794f387ad21c4696e5cd0626cb6f8a5f6aea5 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

03 Feb 2025, 15:19

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 4.7
CWE CWE-476
CWE-362
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/229e6ee43d2a160a1592b83aad620d6027084aad - () https://git.kernel.org/stable/c/229e6ee43d2a160a1592b83aad620d6027084aad - Patch
References () https://git.kernel.org/stable/c/4a9485918a042e3114890dfbe19839a1897f8b2c - () https://git.kernel.org/stable/c/4a9485918a042e3114890dfbe19839a1897f8b2c - Patch
References () https://git.kernel.org/stable/c/5018696b19bc6c021e934a8a59f4b1dd8c0ac9f8 - () https://git.kernel.org/stable/c/5018696b19bc6c021e934a8a59f4b1dd8c0ac9f8 - Patch
References () https://git.kernel.org/stable/c/c2527d07c7e9cda2c6165d5edccf74752baac1b0 - () https://git.kernel.org/stable/c/c2527d07c7e9cda2c6165d5edccf74752baac1b0 - Patch
References () https://git.kernel.org/stable/c/dc02407ea952e20c544a078a6be2e6f008327973 - () https://git.kernel.org/stable/c/dc02407ea952e20c544a078a6be2e6f008327973 - Patch
References () https://git.kernel.org/stable/c/f8f794f387ad21c4696e5cd0626cb6f8a5f6aea5 - () https://git.kernel.org/stable/c/f8f794f387ad21c4696e5cd0626cb6f8a5f6aea5 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/arm-smmu: Aplazar la sonda de los clientes después del límite del dispositivo smmu. Se produce una desreferencia de puntero nulo debido a una ejecución entre la sonda del controlador smmu y la sonda del controlador del cliente, cuando se llama a of_dma_configure() para el cliente después de que se haya ejecutado la sonda iommu_device_register() para el controlador smmu pero antes de que se haya llamado a driver_bound() para el controlador smmu. A continuación se muestra cómo se produce la ejecución: T1: sonda de dispositivo Smmu T2: sonda de dispositivo cliente really_probe() arm_smmu_device_probe() iommu_device_register() really_probe() platform_dma_configure() of_dma_configure() of_dma_configure_id() of_iommu_configure() iommu_probe_device() iommu_init_device() arm_smmu_probe_device() arm_smmu_get_by_fwnode() driver_find_device_by_fwnode() driver_find_device() next_device() klist_next() /* puntero nulo asignado a smmu */ /* desreferencia de puntero nulo mientras smmu->streamid_mask */ driver_bound() klist_add_tail() Cuando este puntero smmu nulo se desreferencia más adelante arm_smmu_probe_device, el dispositivo falla. Para solucionar este problema, postergue la prueba del dispositivo cliente hasta que el dispositivo smmu se haya vinculado al controlador smmu de arm. [will: Agregar comentario]

27 Dec 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-12-27 15:15

Updated : 2025-02-03 15:19

NVD link : CVE-2024-56568

Mitre link : CVE-2024-56568

CVE.ORG link : CVE-2024-56568

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-476

NULL Pointer Dereference