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, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1949-1, DSA-4369-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xen (PTS)jessie, jessie (lts)4.4.4lts5-0+deb8u1fixed
stretch (security), stretch (lts), stretch4.8.5.final+shim4.10.4-1+deb9u12fixed
buster (security), buster, buster (lts)4.11.4+107-gef32c7afa2-1fixed
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(unfixed)end-of-life
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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