CVE-2022-33747
low-risk
Published 2022-10-11
Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest's P2M (Physical-to-Machine) mapping. When large pages are in use to map guest pages in the 2nd-stage page tables, such a removal operation may incur a memory allocation (to replace a large mapping with individual smaller ones). These memory allocations are taken from the global memory pool. A malicious guest might be able to cause the global memory pool to be exhausted by manipulating its own P2M mappings.
Do I need to act?
-
0.03% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.8/10
Low
LOCAL
/ LOW complexity
Affected Products (5)
Affected Vendors
References (16)
Third Party Advisory
https://www.debian.org/security/2022/dsa-5272
Third Party Advisory
https://www.debian.org/security/2022/dsa-5272
26
/ 100
low-risk
Severity
14/34 · Moderate
Exploitability
0/34 · Minimal
Exposure
12/34 · Low