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SELinux is preventing /lib/ld-2.12.90.so from 'mmap_zero' accesses on the memprotect Unknown. ***** Plugin mmap_zero (53.1 confidence) suggests ************************** If you do not think /lib/ld-2.12.90.so should need to mmap low memory in the kernel. Then you may be under attack by a hacker, this is a very dangerous access. Do contact your security administrator and report this issue. ***** Plugin catchall_boolean (42.6 confidence) suggests ******************* If you want to control the ability to mmap a low area of the address space, as configured by /proc/sys/kernel/mmap_min_addr. Then you must tell SELinux about this by enabling the 'mmap_low_allowed' boolean. Do setsebool -P mmap_low_allowed 1 ***** Plugin catchall (5.76 confidence) suggests *************************** If you believe that ld-2.12.90.so should be allowed mmap_zero access on the Unknown memprotect by default. Then you should report this as a bug. You can generate a local policy module to allow this access. Do allow this access for now by executing: # grep ld-linux.so.2 /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp Additional Information: Source Context unconfined_u:unconfined_r:unconfined_execmem_t:s0- s0:c0.c1023 Target Context unconfined_u:unconfined_r:unconfined_execmem_t:s0- s0:c0.c1023 Target Objects Unknown [ memprotect ] Source ld-linux.so.2 Source Path /lib/ld-2.12.90.so Port <Okänd> Host (removed) Source RPM Packages glibc-2.12.90-21 Target RPM Packages Policy RPM selinux-policy-3.9.7-25.fc14 Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 2.6.35.10-74.fc14.i686 #1 SMP Thu Dec 23 16:17:40 UTC 2010 i686 i686 Alert Count 1 First Seen mån 31 jan 2011 14.57.29 Last Seen mån 31 jan 2011 14.57.29 Local ID ba905845-bd64-48a7-b168-002c8c832fda Raw Audit Messages type=AVC msg=audit(1296482249.416:24215): avc: denied { mmap_zero } for pid=4696 comm="ld-linux.so.2" scontext=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023 tclass=memprotect type=SYSCALL msg=audit(1296482249.416:24215): arch=i386 syscall=mmap2 success=no exit=EACCES a0=0 a1=1000 a2=3 a3=22 items=0 ppid=4683 pid=4696 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm=ld-linux.so.2 exe=/lib/ld-2.12.90.so subj=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023 key=(null) Hash: ld-linux.so.2,unconfined_execmem_t,unconfined_execmem_t,memprotect,mmap_zero audit2allow #============= unconfined_execmem_t ============== #!!!! This avc can be allowed using the boolean 'mmap_low_allowed' allow unconfined_execmem_t self:memprotect mmap_zero; audit2allow -R #============= unconfined_execmem_t ============== #!!!! This avc can be allowed using the boolean 'mmap_low_allowed' allow unconfined_execmem_t self:memprotect mmap_zero;
This access should not be required.
Please provide a test case.
Not reproducable.