CVE - CVE-2022-33747

CVE-ID
CVE-2022-33747	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:http://xenbits.xen.org/xsa/advisory-409.html DEBIAN:DSA-5272 URL:https://www.debian.org/security/2022/dsa-5272 FEDORA:FEDORA-2022-5b594b82ac URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/ FEDORA:FEDORA-2022-99af00f60e URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/ FEDORA:FEDORA-2022-d80cc73088 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/ GENTOO:GLSA-202402-07 URL:https://security.gentoo.org/glsa/202402-07 MISC:https://xenbits.xenproject.org/xsa/advisory-409.txt URL:https://xenbits.xenproject.org/xsa/advisory-409.txt MLIST:[oss-security] 20221011 Xen Security Advisory 409 v3 (CVE-2022-33747) - Arm: unbounded memory consumption for 2nd-level page tables URL:http://www.openwall.com/lists/oss-security/2022/10/11/5
Assigning CNA
Xen Project
Date Record Created
20220615	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20220615)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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