CVE-2023-46836

Name
CVE-2023-46836
Description
The fixes for XSA-422 (Branch Type Confusion) and XSA-434 (Speculative Return Stack Overflow) are not IRQ-safe. It was believed that the mitigations always operated in contexts with IRQs disabled. However, the original XSA-254 fix for Meltdown (XPTI) deliberately left interrupts enabled on two entry paths; one unconditionally, and one conditionally on whether XPTI was active. As BTC/SRSO and Meltdown affect different CPU vendors, the mitigations are not active together by default. Therefore, there is a race condition whereby a malicious PV guest can bypass BTC/SRSO protections and launch a BTC/SRSO attack against Xen.
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-446.html
af854a3a-2127-422b-91ae-364da2661108 http://xenbits.xen.org/xsa/advisory-446.html

Match rules

CPE URI Source package Min version Max version
xen == consult Xen advisory XSA-446 == consult Xen advisory XSA-446

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
xen edge-main 4.20.1-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.20.1-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.20.1-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.20.0-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.20.0-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.20.0-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.19.2-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.19.1-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.19.1-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.19.0-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.19.0-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.18.2-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.18.2-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.18.2-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.18.0-r5 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.18.0-r4 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.18.0-r3 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.18.0-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen edge-main 4.17.2-r4 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.22-main 4.20.1-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.22-main 4.20.1-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.22-main 4.20.1-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.22-main 4.20.0-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.22-main 4.17.2-r4 None fixed
xen 3.21-main 4.19.3-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.21-main 4.19.3-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.21-main 4.19.3-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.21-main 4.19.2-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.21-main 4.19.2-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.21-main 4.19.2-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.21-main 4.19.1-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.21-main 4.17.2-r4 None fixed
xen 3.20-main 4.18.5-r3 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.18.5-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.18.5-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.18.5-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.18.4-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.18.4-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.18.3-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.18.3-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.18.3-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.18.2-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.20-main 4.17.2-r4 None fixed
xen 3.19-main 4.18.5-r3 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.5-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.5-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.5-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.4-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.4-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.3-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.3-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.3-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.2-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.0-r4 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.0-r3 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.18.0-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.19-main 4.17.2-r4 None fixed
xen 3.18-main 4.17.5-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.18-main 4.17.5-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.18-main 4.17.5-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.18-main 4.17.4-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.18-main 4.17.3-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.18-main 4.17.3-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.18-main 4.17.2-r5 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.18-main 4.17.2-r4 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.17-main 4.16.6-r3 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.17-main 4.16.6-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.17-main 4.16.6-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.17-main 4.16.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.17-main 4.16.5-r7 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.17-main 4.16.5-r6 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.17-main 4.16.5-r5 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.17-main 4.16.5-r4 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.17-main 4.16.5-r2 Natanael Copa <ncopa@alpinelinux.org> fixed