ALPINE-CVE-2026-79609
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-79609
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-79609.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-79609
- Upstream
- CVE-2026-79609
- Published
- 2026-10-13T16:17:23Z
- Modified
- 2026-10-14T09:30:02Z
- Summary
- [none]
- Details
-
XPTI (Xen Page Table Isolation) was introduced to mitigate Meltdown (CVE-2017-5754, one aspect of XSA-254). This involves copying 64-bit PV guest page table entries from guest-chosen root page tables to the Xen- chosen one which is in actual use by hardware. To read the guest root page table, the directmap is used. PV guests, however, have a directmap which may not cover all memory; in particular this is the case if any memory extends beyond the 5 TiB (CONFIG_BIGMEM=y: 3.5 TiB) address boundary.
- References
Affected packages
Alpine:v3.21 / xen
Package
- Name
- xen
- Purl
- pkg:apk/alpine/xen?arch=source
Alpine:v3.22 / xen
Package
- Name
- xen
- Purl
- pkg:apk/alpine/xen?arch=source
Alpine:v3.23 / xen
Package
- Name
- xen
- Purl
- pkg:apk/alpine/xen?arch=source