Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iommufd: Do not add the same hwpt to the ioas->hwpt_list twice The hwpt is added to the hwpt_list only during its creation, it is never added again. This hunk is some missed leftover from rework. Adding it twice will corrupt the linked list in some cases. It effects HWPT specific attachment, which is something the test suite cannot cover until we can create a legitimate struct device with a non-system iommu "driver" (ie we need the bus removed from the iommu code)
References
- https://git.kernel.org/stable/c/b4ff830eca097df51af10a9be29e8cc817327919
- https://git.kernel.org/stable/c/c44adefdcf472f946f0632f4e0ddcbf3e00b8516
FAQ
What is CVE-2023-54043?
CVE-2023-54043 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: iommufd: Do not add the same hwpt to the ioas->hwpt_list twice The hwpt is added to the hwpt_list only during its creation, it is ...
How severe is CVE-2023-54043?
CVSS scoring is not yet available for CVE-2023-54043. Check NVD for updates.
Is there a patch for CVE-2023-54043?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.