| Name | CVE-2015-8553 |
| Description | Xen allows guest OS users to obtain sensitive information from uninitialized locations in host OS kernel memory by not enabling memory and I/O decoding control bits. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-0777. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| NVD severity | low (attack range: local) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | jessie | 3.16.56-1+deb8u1 | vulnerable |
| jessie (security) | 3.16.64-2 | vulnerable | |
| stretch | 4.9.168-1 | vulnerable | |
| stretch (security) | 4.9.168-1+deb9u2 | vulnerable | |
| buster, sid | 4.19.37-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | (unstable) | 4.19.37-1 | low | ||
| linux-2.6 | source | (unstable) | (unfixed) | low |
[stretch] - linux <ignored> (Intrusive; breaks qemu as used in Jessie; cf. kernel-sec for more details)
[jessie] - linux <ignored> (Intrusive; breaks qemu as used in Jessie; cf. kernel-sec for more details)
[wheezy] - linux <ignored> (Intrusive; breaks qemu as used in Wheezy; cf. kernel-sec for more details)
[squeeze] - linux-2.6 <no-dsa> (Xen not supported in Squeeze LTS)
CVE for the incomplete patches from XSA-120 and supplied in
XSA-120 v5+ addendum patch.
Cf. https://bugzilla.redhat.com/show_bug.cgi?id=1289128#c2
http://xenbits.xen.org/xsa/advisory-120.html
Patch is discussed in http://thread.gmane.org/gmane.comp.emulators.xen.devel/140440/focus=140441
and http://thread.gmane.org/gmane.linux.kernel/1924087/focus=1924088
https://git.kernel.org/linus/7681f31ec9cdacab4fd10570be924f2cef6669ba