| Summary: | SELinux is preventing /opt/picasa/wine/bin/wine-preloader from 'mmap_zero' accesses on the memprotect Unknown. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | RVV <ronzhin98> |
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> |
| Status: | CLOSED NOTABUG | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 14 | CC: | acook, dwalsh, mgrepl, robin.bowes, ronzhin98, topotronic |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | setroubleshoot_trace_hash:cf552c478bfcf129e68316fc1b456d46715aeb90e361f0f3135ee598363c9125 | ||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-01-25 08:58:26 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
If you want to run wine apps that need mmap_zero, you need to turn on the boolean As described in the alert. #setsebool -P mmap_low_allowed 1 |
SELinux is preventing /opt/picasa/wine/bin/wine-preloader from 'mmap_zero' accesses on the memprotect Unknown. ***** Plugin mmap_zero (53.1 confidence) suggests ************************** If you do not think /opt/picasa/wine/bin/wine-preloader 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 wine-preloader 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 wine-preloader /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 wine-preloader Source Path /opt/picasa/wine/bin/wine-preloader Port <Неизвестно> Host (removed) Source RPM Packages picasa-2.7.3736-15 Target RPM Packages Policy RPM selinux-policy-3.9.7-19.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 15 First Seen Пнд 10 Янв 2011 10:38:29 Last Seen Пнд 10 Янв 2011 10:40:59 Local ID b3d0cf68-b6ed-4fb5-81c1-c715fd0a4ced Raw Audit Messages type=AVC msg=audit(1294630859.260:30985): avc: denied { mmap_zero } for pid=11227 comm="wine-preloader" 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 wine-preloader,unconfined_execmem_t,unconfined_execmem_t,memprotect,mmap_zero type=SYSCALL msg=audit(1294630859.260:30985): arch=i386 syscall=mmap success=no exit=EACCES a0=bfc946f0 a1=bfc946f0 a2=5a a3=7c002780 items=0 ppid=10983 pid=11227 auid=501 uid=501 gid=501 euid=501 suid=501 fsuid=501 egid=501 sgid=501 fsgid=501 tty=(none) ses=1 comm=wine-preloader exe=/opt/picasa/wine/bin/wine-preloader subj=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023 key=(null) wine-preloader,unconfined_execmem_t,unconfined_execmem_t,memprotect,mmap_zero #============= unconfined_execmem_t ============== #!!!! This avc can be allowed using the boolean 'mmap_low_allowed' allow unconfined_execmem_t self:memprotect mmap_zero;