In the Linux kernel, the following vulnerability has been resolved:
iommu/vt-d: Use device rbtree in iopf reporting path
The existing I/O page fault handler currently locates the PCI device by
calling pci_get_domain_bus_and_slot(). This function searches the list
of all PCI devices until the desired device is found. To improve lookup
efficiency, replace it with device_rbtree_find() to search the device
within the probed device rbtree.
The I/O page fault is initiated by the device, which does not have any
synchronization mechanism with the software to ensure that the device
stays in the probed device tree. Theoretically, a device could be released
by the IOMMU subsystem after device_rbtree_find() and before
iopf_get_dev_fault_param(), which would cause a use-after-free problem.
Add a mutex to synchronize the I/O page fault reporting path and the IOMMU
release device path. This lock doesn't introduce any performance overhead,
as the conflict between I/O page fault reporting and device releasing is
very rare.
References
Configurations
History
07 Apr 2025, 19:05
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/3d39238991e745c5df85785604f037f35d9d1b15 - Patch | |
| References | () https://git.kernel.org/stable/c/def054b01a867822254e1dda13d587f5c7a99e2a - Patch |
Information
Published : 2024-05-17 15:15
Updated : 2025-04-07 19:05
NVD link : CVE-2024-35843
Mitre link : CVE-2024-35843
CVE.ORG link : CVE-2024-35843
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free