CVE-2018-19962

NameCVE-2018-19962
DescriptionAn issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because small IOMMU mappings are unsafely combined into larger ones.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1949-1, DSA-4369-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xen (PTS)stretch (security), stretch4.8.5.final+shim4.10.4-1+deb9u12fixed
buster, buster (security)4.11.4+107-gef32c7afa2-1fixed
bullseye (security), bullseye4.14.3-1~deb11u1fixed
bookworm, sid4.14.3-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xensourcejessie4.4.4lts5-0+deb8u1DLA-1949-1
xensourcestretch4.8.5+shim4.10.2+xsa282-1+deb9u11DSA-4369-1
xensource(unstable)4.11.1-1

Notes

https://xenbits.xen.org/xsa/advisory-275.txt

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