PT-2022-7626 · Linux+2 · Linux Kernel+2
Adrian Huang
·
Published
2022-02-28
·
Updated
2024-11-01
·
CVE-2022-48916
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.17.0-rc3+
Description
The vulnerability is related to the iommu/vt-d component in the Linux kernel. When enabling VMD and IOMMU scalable mode, a kernel panic call trace/kernel log is shown, indicating a double list add issue. The vulnerability can cause a fatal exception and kernel panic, leading to a denial-of-service (DoS) condition. The issue is specific to the Eagle Stream platform with Sapphire Rapids CPU.
Recommendations
To resolve the issue, update the Linux kernel to a version later than 5.17.0-rc3+. As a temporary workaround, consider disabling the VMD and IOMMU scalable mode until a patch is available. Additionally, restrict access to the vulnerable module
iommu/vt-d to minimize the risk of exploitation.Exploit
Fix
Improper Locking
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Weakness Enumeration
Related Identifiers
Affected Products
Linux Kernel
Red Os
Suse