CVE-2018-7540

NameCVE-2018-7540
DescriptionAn issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1300-1, DLA-1577-1, DSA-4131-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xen (PTS)buster, buster (security)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
trixie4.17.3+10-g091466ba55-1fixed
sid4.17.3+36-g54dacb5c02-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xensourcewheezy4.1.6.lts1-13DLA-1300-1
xensourcejessie4.4.4lts4-0+deb8u1DLA-1577-1
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

https://xenbits.xen.org/xsa/advisory-252.html

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