CVE-2022-26362

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Summary

CVECVE-2022-26362
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-06-09 17:15:00 UTC
Updated2023-11-07 03:44:00 UTC
Descriptionx86 pv: Race condition in typeref acquisition Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to maintain invariants required for Xen's safety, e.g. PV guests may not have direct writeable access to pagetables; updates need auditing by Xen. Unfortunately, the logic for acquiring a type reference has a race condition, whereby a safely TLB flush is issued too early and creates a window where the guest can re-establish the read/write mapping before writeability is prohibited.

Risk And Classification

Problem Types: CWE-362

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 11.0 All All All
Operating System Fedoraproject Fedora 35 All All All
Operating System Fedoraproject Fedora 36 All All All
Operating System Xen Xen All All All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 36 Update: qemu-6.2.0-12.fc36 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
oss-security - Xen Security Advisory 401 v2 (CVE-2022-26362) - x86 pv: Race condition in typeref acquisition MLIST www.openwall.com
XSA-401 - Xen Security Advisories CONFIRM xenbits.xen.org
[SECURITY] Fedora 35 Update: xen-4.15.3-2.fc35 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
Xen: Multiple Vulnerabilities (GLSA 202208-23) — Gentoo security GENTOO security.gentoo.org
[SECURITY] Fedora 35 Update: xen-4.15.3-2.fc35 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
xenbits.xenproject.org/xsa/advisory-401.txt MISC xenbits.xenproject.org
Debian -- Security Information -- DSA-5184-1 xen DEBIAN www.debian.org
[SECURITY] Fedora 36 Update: qemu-6.2.0-12.fc36 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
Xen TLB Flush Bypass ≈ Packet Storm MISC packetstormsecurity.com
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

  • 180893 Debian Security Update for xen (DSA 5184-1)
  • 182358 Debian Security Update for xen (CVE-2022-26362)
  • 282863 Fedora Security Update for collectd (FEDORA-2022-0142d562ca)
  • 282969 Fedora Security Update for xen (FEDORA-2022-2c9f8224f8)
  • 377772 Citrix XenServer Security Updates (CTX460064)
  • 501524 Alpine Linux Security Update for xen
  • 501802 Alpine Linux Security Update for xen
  • 502243 Alpine Linux Security Update for xen
  • 502812 Alpine Linux Security Update for xen
  • 710600 Gentoo Linux Xen Multiple Vulnerabilities (GLSA 202208-23)
  • 752227 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:2065-1)
  • 752238 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:2084-1)
  • 752262 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:2158-1)
  • 752264 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:2164-1)
  • 752299 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:2296-1)
  • 752395 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:2560-1)
  • 752399 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:2601-1)
  • 752400 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:2600-1)
  • 752405 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:2599-1)
  • 752410 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:2597-1)
  • 752411 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:2591-1)
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