Summary: SELinux is preventing /lib/ld-2.11.so from making the program stack executable. Detailed Description: The ld-linux.so.2 application attempted to make its stack executable. This is a potential security problem. This should never ever be necessary. Stack memory is not executable on most OSes these days and this will not change. Executable stack memory is one of the biggest security problems. An execstack error might in fact be most likely raised by malicious code. Applications are sometimes coded incorrectly and request this permission. The SELinux Memory Protection Tests (http://people.redhat.com/drepper/selinux-mem.html) web page explains how to remove this requirement. If ld-linux.so.2 does not work and you need it to work, you can configure SELinux temporarily to allow this access until the application is fixed. Please file a bug report. Allowing Access: Sometimes a library is accidentally marked with the execstack flag, if you find a library with this flag you can clear it with the execstack -c LIBRARY_PATH. Then retry your application. If the app continues to not work, you can turn the flag back on with execstack -s LIBRARY_PATH. Otherwise, if you trust ld-linux.so.2 to run correctly, you can change the context of the executable to execmem_exec_t. "chcon -t execmem_exec_t '/lib/ld-2.11.so'" You must also change the default file context files on the system in order to preserve them even on a full relabel. "semanage fcontext -a -t execmem_exec_t '/lib/ld-2.11.so'" Fix Command: chcon -t execmem_exec_t '/lib/ld-2.11.so' Additional Information: Source Context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1 023 Target Context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1 023 Target Objects None [ process ] Source ld-linux.so.2 Source Path /lib/ld-2.11.so Port <Unknown> Host (removed) Source RPM Packages glibc-2.11-2 Target RPM Packages Policy RPM selinux-policy-3.6.32-41.fc12 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name allow_execstack Host Name (removed) Platform Linux (removed) 2.6.31.5-127.fc12.i686.PAE #1 SMP Sat Nov 7 21:25:57 EST 2009 i686 i686 Alert Count 12 First Seen Wed 18 Nov 2009 02:46:30 PM EET Last Seen Wed 18 Nov 2009 02:49:47 PM EET Local ID 08ed9fd1-83ec-4004-a731-b86c0d55f33c Line Numbers Raw Audit Messages node=(removed) type=AVC msg=audit(1258548587.72:41207): avc: denied { execstack } for pid=11591 comm="ld-linux.so.2" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process node=(removed) type=SYSCALL msg=audit(1258548587.72:41207): arch=40000003 syscall=125 success=no exit=-13 a0=bfab8000 a1=1000 a2=1000007 a3=bfab7fc8 items=0 ppid=11590 pid=11591 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=pts4 ses=6 comm="ld-linux.so.2" exe="/lib/ld-2.11.so" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) Hash String generated from selinux-policy-3.6.32-41.fc12,allow_execstack,ld-linux.so.2,unconfined_t,unconfined_t,process,execstack audit2allow suggests: #============= unconfined_t ============== allow unconfined_t self:process execstack;
*** This bug has been marked as a duplicate of bug 533987 ***