CVE-2022-33747

Aliases:DEBIAN-CVE-2022-33747ALPINE-CVE-2022-33747
Advisory lineage Upstream: 0 Downstream: 6
Modified
Published: 11 Oct 2022, 00:00
Last modified:03 Aug 2024, 08:09

Vulnerability Summary

Overall Risk (default)
low
15/100
CVSS Score
3.8 LOW
v3.1 (nvd)
EPSS Score
0.28% LOW
0% probability +0.25%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

11 Oct 2022, 00:00
Published
Vulnerability first disclosed
03 Aug 2024, 08:09
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•LOW•Score: 3.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

EPSS Trends

Current EPSS score: 0.28%• Percentile: 20%

Techniques & Countermeasures

  • CWE-404•Improper Resource Shutdown or Release

    The product does not release or incorrectly releases a resource before it is made available for re-use.

Affected Systems

  • alpine•xen

    < 4.15.4-r0 | < 4.15.4-r0 | < 4.16.3-r0 | < 4.16.3-r0 | < 4.17.0-r0 | < 4.17.0-r0 | < 4.17.0-r0 | < 4.17.0-r0 | < 4.17.0-r0 | < 4.17.0-r0 | < 4.17.0-r0

  • debian•xen

    < 4.14.5+86-g1c354767d5-1 | < 4.16.2+90-g0d39a6d1ae-1 | < 4.16.2+90-g0d39a6d1ae-1 | < 4.16.2+90-g0d39a6d1ae-1

  • debian•debian_linux

    11.0

  • fedoraproject•fedora

    35 | 36 | 37

References (10)