CVE-2024-35843
- Source
- https://cve.org/CVERecord?id=CVE-2024-35843
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-35843.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-35843
- Downstream
- Related
- Published
- 2024-05-17T14:40:10Z
- Modified
- 2026-08-12T03:30:21Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- iommu/vt-d: Use device rbtree in iopf reporting path
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/35xxx/CVE-2024-35843.json" }- References
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- https://git.kernel.org/stable/c/3d39238991e745c5df85785604f037f35d9d1b15
- https://git.kernel.org/stable/c/def054b01a867822254e1dda13d587f5c7a99e2a
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/35xxx/CVE-2024-35843.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-35843
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git