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Nicolas Iooss 02a7d77ef2 libsepol: make parsing symbol table headers more robust 
When hll/pp loads a policy file which has been modified so that the
nprim field of one of its non-empty symbol table was changed to zero, it
crashes with a segmentation fault. A quick analysis leads to
"p->sym_val_to_name[i] = (char **)alloc(p->symtab[i].nprim, sizeof(char
*));" in policydb_index_others(), which is not executed when
p->symtab[i].nprim is zero even though there are items in
p->symtab[i].table.

Detect such an oddity in the policy file early to exit with a clean
error message.

Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
 		2016-11-16 09:07:10 -05:00
checkpolicy Update VERSION and ChangeLog files for 2.6 final release. 2016-10-14 11:31:26 -04:00
libselinux Updated libselinux and libsemanage ChangeLog 2016-11-15 11:14:24 -05:00
libsemanage Updated libsemanage ChangeLog 2016-11-15 17:28:49 -05:00
libsepol libsepol: make parsing symbol table headers more robust 2016-11-16 09:07:10 -05:00
policycoreutils Updated policycoreutils ChangeLog 2016-11-15 10:56:24 -05:00
scripts scripts/release: cleanups 2016-10-14 11:47:29 -04:00
secilc Updated secilc ChangeLog 2016-11-15 11:10:21 -05:00
sepolgen Update VERSION and ChangeLog files for 2.6 final release. 2016-10-14 11:31:26 -04:00
.gitignore global: gitignore: add a couple of more editor backup filetypes 2013-02-01 12:14:57 -05:00
CleanSpec.mk Add empty top level Android.mk / CleanSpec.mk files 2015-04-16 07:54:09 -04:00
Makefile Makefile: make distclean target work 2016-09-29 10:48:14 -04:00
README Add redhat-rpm-config as a build dependency on Fedora. 2016-05-04 15:54:27 -04:00

README 

Please submit all bug reports and patches to selinux@tycho.nsa.gov.
Subscribe via selinux-join@tycho.nsa.gov.

Build dependencies on Fedora:
yum install audit-libs-devel bison bzip2-devel dbus-devel dbus-glib-devel flex flex-devel flex-static glib2-devel libcap-devel libcap-ng-devel pam-devel pcre-devel python-devel setools-devel swig ustr-devel xmlto redhat-rpm-config

To build and install everything under a private directory, run:
make DESTDIR=~/obj install install-pywrap

To install as the default system libraries and binaries
(overwriting any previously installed ones - dangerous!),
on x86_64, run:
make LIBDIR=/usr/lib64 SHLIBDIR=/lib64 install install-pywrap relabel
or on x86 (32-bit), run:
make install install-pywrap relabel

This may render your system unusable if the upstream SELinux userspace
lacks library functions or other dependencies relied upon by your
distribution.  If it breaks, you get to keep both pieces.