DEBIAN-CVE-2022-26362
- Source
- https://security-tracker.debian.org/tracker/CVE-2022-26362
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-26362.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2022-26362
- Upstream
- Downstream
- Published
- 2022-06-09T17:15:08Z
- Modified
- 2026-09-01T16:05:22Z
- Severity
-
- 6.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
x86 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.
- References
Affected packages
Debian:12 / xen
Package
- Name
- xen
- Purl
- pkg:deb/debian/xen?arch=source&distro=bookworm
Debian:13 / xen
Package
- Name
- xen
- Purl
- pkg:deb/debian/xen?arch=source&distro=trixie
Debian:14 / xen
Package
- Name
- xen
- Purl
- pkg:deb/debian/xen?arch=source&distro=forky