CVE-2022-23033

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Summary

CVECVE-2022-23033
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-01-25 14:15:00 UTC
Updated2023-11-07 03:44:00 UTC
Descriptionarm: guest_physmap_remove_page not removing the p2m mappings The functions to remove one or more entries from a guest p2m pagetable on Arm (p2m_remove_mapping, guest_physmap_remove_page, and p2m_set_entry with mfn set to INVALID_MFN) do not actually clear the pagetable entry if the entry doesn't have the valid bit set. It is possible to have a valid pagetable entry without the valid bit set when a guest operating system uses set/way cache maintenance instructions. For instance, a guest issuing a set/way cache maintenance instruction, then calling the XENMEM_decrease_reservation hypercall to give back memory pages to Xen, might be able to retain access to those pages even after Xen started reusing them for other purposes.

Risk And Classification

Problem Types: CWE-404

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 11.0 All All All
Operating System Fedoraproject Fedora 34 All All All
Operating System Xen Xen All All All All

References

ReferenceSourceLinkTags
Debian -- Security Information -- DSA-5117-1 xen DEBIAN www.debian.org
oss-security - Xen Security Advisory 393 v2 (CVE-2022-23033) - arm: guest_physmap_remove_page not removing the p2m mappings MLIST www.openwall.com
Xen: Multiple Vulnerabilities (GLSA 202208-23) — Gentoo security GENTOO security.gentoo.org
[SECURITY] Fedora 34 Update: xen-4.14.4-1.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 34 Update: xen-4.14.4-1.fc34 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
xenbits.xenproject.org/xsa/advisory-393.txt MISC xenbits.xenproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: Array

Legacy QID Mappings

  • 179182 Debian Security Update for xen (DSA 5117-1)
  • 184502 Debian Security Update for xen (CVE-2022-23033)
  • 282332 Fedora Security Update for xen (FEDORA-2022-420bf9fc1e)
  • 282411 Fedora Security Update for xen (FEDORA-2022-0cc3916e08)
  • 500806 Alpine Linux Security Update for xen
  • 501523 Alpine Linux Security Update for xen
  • 501801 Alpine Linux Security Update for xen
  • 502242 Alpine Linux Security Update for xen
  • 504548 Alpine Linux Security Update for xen
  • 710600 Gentoo Linux Xen Multiple Vulnerabilities (GLSA 202208-23)
  • 751691 OpenSUSE Security Update for xen (openSUSE-SU-2022:0333-1)
  • 751713 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:0468-1)
  • 751714 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:0469-1)
  • 751717 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:0467-1)
  • 752015 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:0333-1)
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