PT-2024-26759 · Linux+6 · Linux Kernel+6
Jason Gunthorpe
+3
·
Published
2024-02-27
·
Updated
2026-05-26
·
CVE-2024-35843
CVSS v3.1
6.8
Medium
| Vector | AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to the I/O page fault handler in the Linux kernel, which 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, it is replaced 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. A mutex is added to synchronize the I/O page fault reporting path and the IOMMU release device path.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Debian
Linuxmint
Linux Kernel
Red Hat
Suse
Ubuntu