CVE-2026-23554

Name
CVE-2026-23554
Description
The Intel EPT paging code uses an optimization to defer flushing of any cached EPT state until the p2m lock is dropped, so that multiple modifications done under the same locked region only issue a single flush. Freeing of paging structures however is not deferred until the flushing is done, and can result in freed pages transiently being present in cached state. Such stale entries can point to memory ranges not owned by the guest, thus allowing access to unintended memory regions.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security@xen.org https://xenbits.xenproject.org/xsa/advisory-480.html
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2026/03/17/6
af854a3a-2127-422b-91ae-364da2661108 http://xenbits.xen.org/xsa/advisory-480.html

Match rules

CPE URI Source package Min version Max version
cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* xen >= 4.17 <= None

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
xen edge-main 4.21.1-r3 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.21.1-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.21.1-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.21.1-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.21.0-r3 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.21.0-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.21.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.21.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.20.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.20.1-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.20.1-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.20.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.20.0-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.20.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.20.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.19.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.19.1-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.19.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.19.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.19.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.18.2-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.18.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.18.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.18.0-r5 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.18.0-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.18.0-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.18.0-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.18.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.18.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.2-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.2-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.2-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.1-r5 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.1-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.1-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.1-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.1-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.0-r5 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.0-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.0-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.0-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.17.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.23-main 4.20.3-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.23-main 4.20.3-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.23-main 4.20.3-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.23-main 4.20.2-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.23-main 4.20.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.23-main 4.20.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.22-main 4.20.3-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.22-main 4.20.3-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.22-main 4.20.3-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.22-main 4.20.2-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.22-main 4.20.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.22-main 4.20.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.22-main 4.20.1-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.22-main 4.20.1-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.22-main 4.20.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.22-main 4.20.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.22-main 4.19.1-r1 None possibly vulnerable
xen 3.22-main 4.19.0-r1 None possibly vulnerable
xen 3.22-main 4.19.0-r0 None possibly vulnerable
xen 3.22-main 4.18.2-r0 None possibly vulnerable
xen 3.22-main 4.18.0-r5 None possibly vulnerable
xen 3.22-main 4.18.0-r4 None possibly vulnerable
xen 3.22-main 4.18.0-r3 None possibly vulnerable
xen 3.22-main 4.18.0-r2 None possibly vulnerable
xen 3.22-main 4.17.2-r4 None possibly vulnerable
xen 3.22-main 4.17.2-r3 None possibly vulnerable
xen 3.22-main 4.17.2-r2 None possibly vulnerable
xen 3.22-main 4.17.2-r1 None possibly vulnerable
xen 3.22-main 4.17.2-r0 None possibly vulnerable
xen 3.22-main 4.17.1-r5 None possibly vulnerable
xen 3.22-main 4.17.1-r3 None possibly vulnerable
xen 3.22-main 4.17.1-r1 None possibly vulnerable
xen 3.22-main 4.17.0-r5 None possibly vulnerable
xen 3.22-main 4.17.0-r2 None possibly vulnerable
xen 3.22-main 4.17.0-r0 None possibly vulnerable
xen 3.21-main 4.19.5-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.21-main 4.19.5-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.21-main 4.19.5-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.21-main 4.19.4-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.21-main 4.19.4-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.21-main 4.19.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.21-main 4.19.3-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.21-main 4.19.3-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.21-main 4.19.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.21-main 4.19.2-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.21-main 4.19.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.21-main 4.19.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.21-main 4.19.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.21-main 4.19.0-r1 None possibly vulnerable
xen 3.21-main 4.19.0-r0 None possibly vulnerable
xen 3.21-main 4.18.2-r0 None possibly vulnerable
xen 3.21-main 4.18.0-r5 None possibly vulnerable
xen 3.21-main 4.18.0-r4 None possibly vulnerable
xen 3.21-main 4.18.0-r3 None possibly vulnerable
xen 3.21-main 4.18.0-r2 None possibly vulnerable
xen 3.21-main 4.17.2-r4 None possibly vulnerable
xen 3.21-main 4.17.2-r3 None possibly vulnerable
xen 3.21-main 4.17.2-r2 None possibly vulnerable
xen 3.21-main 4.17.2-r1 None possibly vulnerable
xen 3.21-main 4.17.2-r0 None possibly vulnerable
xen 3.21-main 4.17.1-r5 None possibly vulnerable
xen 3.21-main 4.17.1-r3 None possibly vulnerable
xen 3.21-main 4.17.1-r1 None possibly vulnerable
xen 3.21-main 4.17.0-r5 None possibly vulnerable
xen 3.21-main 4.17.0-r2 None possibly vulnerable
xen 3.21-main 4.17.0-r0 None possibly vulnerable
xen 3.20-main 4.18.5-r6 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.18.5-r5 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.18.5-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.20-main 4.18.5-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.20-main 4.18.5-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.20-main 4.18.5-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.20-main 4.18.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.20-main 4.18.4-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.20-main 4.18.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.20-main 4.18.3-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.20-main 4.18.3-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.20-main 4.18.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.20-main 4.18.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.20-main 4.18.2-r0 None possibly vulnerable
xen 3.20-main 4.18.0-r5 None possibly vulnerable
xen 3.20-main 4.18.0-r4 None possibly vulnerable
xen 3.20-main 4.18.0-r3 None possibly vulnerable
xen 3.20-main 4.18.0-r2 None possibly vulnerable
xen 3.20-main 4.17.2-r4 None possibly vulnerable
xen 3.20-main 4.17.2-r3 None possibly vulnerable
xen 3.20-main 4.17.2-r2 None possibly vulnerable
xen 3.20-main 4.17.2-r1 None possibly vulnerable
xen 3.20-main 4.17.2-r0 None possibly vulnerable
xen 3.20-main 4.17.1-r5 None possibly vulnerable
xen 3.20-main 4.17.1-r3 None possibly vulnerable
xen 3.20-main 4.17.1-r1 None possibly vulnerable
xen 3.20-main 4.17.0-r5 None possibly vulnerable
xen 3.20-main 4.17.0-r2 None possibly vulnerable
xen 3.20-main 4.17.0-r0 None possibly vulnerable
xen 3.19-main 4.18.5-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.5-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.5-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.4-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.3-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.3-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.0-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.0-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.0-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.18.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.19-main 4.17.2-r4 None possibly vulnerable
xen 3.19-main 4.17.2-r3 None possibly vulnerable
xen 3.19-main 4.17.2-r2 None possibly vulnerable
xen 3.19-main 4.17.2-r1 None possibly vulnerable
xen 3.19-main 4.17.2-r0 None possibly vulnerable
xen 3.19-main 4.17.1-r5 None possibly vulnerable
xen 3.19-main 4.17.1-r3 None possibly vulnerable
xen 3.19-main 4.17.1-r1 None possibly vulnerable
xen 3.19-main 4.17.0-r5 None possibly vulnerable
xen 3.19-main 4.17.0-r2 None possibly vulnerable
xen 3.19-main 4.17.0-r0 None possibly vulnerable