CVEvulnerability
CVE-2022-33744
4.7 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2022-07-05
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.7 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 1.9 LOW — AV:L/AC:M/Au:N/C:N/I:N/A:P
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.
Affected configurations
• linux linux kernel (>= 3.13 <= 5.18)
• debian debian linux 10.0
• debian debian linux 11.0
References
- http://www.openwall.com/lists/oss-security/2022/07/05/4 Mailing List, Patch, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-406.html Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing List, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5191 Third Party Advisory
- https://xenbits.xenproject.org/xsa/advisory-406.txt Vendor Advisory
- http://www.openwall.com/lists/oss-security/2022/07/05/4 Mailing List, Patch, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-406.html Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing List, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5191 Third Party Advisory
- https://xenbits.xenproject.org/xsa/advisory-406.txt Vendor Advisory