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Description of problem: It is a goal for libvirt in RHEL-7 to have full RELRO hardening. Unfortunately we missed this for the loadable modules, per this upstream commit commit f1f0e53b0814aab3c093f1219da95c0f836cdf4a Author: Guido Günther <agx> Date: Sun Sep 1 08:50:58 2013 +0200 Pass AM_LDFLAGS to driver modules too This gives us a RO got, otherwise Debian's lintian complains: W: libvirt-bin: hardening-no-relro usr/lib/libvirt/connection-driver/libvirt_driver_qemu.so W: libvirt-bin: hardening-no-relro usr/lib/libvirt/connection-driver/libvirt_driver_storage.so W: libvirt-bin: hardening-no-relro usr/lib/libvirt/connection-driver/libvirt_driver_uml.so W: libvirt-bin: hardening-no-relro usr/lib/libvirt/connection-driver/libvirt_driver_vbox.so W: libvirt-bin: hardening-no-relro usr/lib/libvirt/connection-driver/libvirt_driver_xen.so W: libvirt-bin: hardening-no-relro usr/lib/libvirt/connection-driver/libvirt_driver_nwfilter.so W: libvirt-bin: hardening-no-relro usr/lib/libvirt/connection-driver/libvirt_driver_storage.so W: libvirt-bin: hardening-no-relro usr/lib/libvirt/connection-driver/libvirt_driver_uml.so W: libvirt-sanlock: hardening-no-relro usr/lib/libvirt/lock-driver/sanlock.so Version-Release number of selected component (if applicable): libvirt-1.1.1-4.el7 How reproducible: Always Steps to Reproduce: 1. Use 'eu-readelf -a' to look for the 'BIND_NOW' flag on every .so file in the libvirt RPMs 2. 3. Actual results: $ eu-readelf -a /usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so | grep BIND_NOW Expected results: $ eu-readelf -a /usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so | grep BIND_NOW BIND_NOW Additional info:
Created attachment 827614 [details] qemu.so's reloro log via readelf tool
Hi Jiri , I found both -4 version which don't have the patch and -12 version that don't have key word BIND_NOW but GNU_RELRO . Is there a another way to prove that those file have full RELRO hardening ? I upload the log of the command #eu-readelf -a /usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so with latest libvirt
No idea. It was rpmdiff that complained about this and it stopped complaining once we added the patch :-)
Jiri , could you provide a command line with rpmdiff to reproduce the hardening-no-relro warning on rhel ? I try to used lintian , but found there is no libvirt-1.1.1-4-bin any more on debians side , seems like they don't keep those old unstable package. BTW , libvirt-1.2.0-bin passed without warning via lintian.
This request was resolved in Red Hat Enterprise Linux 7.0. Contact your manager or support representative in case you have further questions about the request.