CVE-2018-7542

NameCVE-2018-7542
DescriptionAn issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-4131-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xen (PTS)bullseye4.14.6-1fixed
bullseye (security)4.14.5+94-ge49571868d-1fixed
bookworm4.17.3+10-g091466ba55-1~deb12u1fixed
sid, trixie4.17.3+36-g54dacb5c02-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xensourcewheezy(not affected)
xensourcejessie(not affected)
xensourcestretch4.8.3+comet2+shim4.10.0+comet3-1+deb9u5DSA-4131-1
xensource(unstable)4.8.3+comet2+shim4.10.0+comet3-1+deb9u5

Notes

[jessie] - xen <not-affected> (Vulnerable code introduced later)
[wheezy] - xen <not-affected> (Vulnerable code introduced later)
https://xenbits.xen.org/xsa/advisory-256.html

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