CVE-2022-33744 - CVE House

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Status published Medium CVE-2022-33744

Arm guests can cause Dom0 DoS via PV devices When...

4.7 CVSS

Vulnerability Description

Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests' memory pages.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Oleksandr Tyshchenko of EPAM.'}]}}}

References

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fs/ntfs3: fix ntfs_mount_options leak in ntfs_fill_super()

fs/ntfs3: Initialize new folios before use

Affected Vendor

Linux

View all reports →

Affected Software

Linux

Vulnerable Versions:

consult Xen advisory XSA-406

Timeline

Official Publish: July 5th, 2022

Last Modified: August 3rd, 2024

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.