CVE-2022-33744
Medium
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.
SeverityMedium
CVSS4.7
Exploit probability—
Product
Linux Kernel
PublishedJul 5, 2022
First seenJul 5, 2022
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.13 ≤ v ≤ 5.18 | — |
| debian debian_linux | 10.0, 11.0 | — |
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