CVE-2018-14678

NameCVE-2018-14678
DescriptionAn issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges.
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-1529-1, DLA-1531-1, DSA-4308-1
NVD severityhigh

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1fixed
stretch (security)4.9.210-1+deb9u1fixed
buster4.19.132-1fixed
buster (security)4.19.118-2+deb10u1fixed
bullseye, sid5.7.10-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie3.16.59-1DLA-1529-1
linuxsourcestretch4.9.110-3+deb9u5DSA-4308-1
linuxsource(unstable)4.17.14-1
linux-4.9sourcejessie4.9.110-3+deb9u5~deb8u1DLA-1531-1

Notes

https://xenbits.xen.org/xsa/advisory-274.html
https://git.kernel.org/linus/b3681dd548d06deb2e1573890829dff4b15abf46

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