| Summary: | SELinux is preventing /usr/bin/pdextended from using the 'execstack' accesses on a process. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Mikhail <miliatov> |
| 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: | dominick.grift, dwalsh, mgrepl |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | setroubleshoot_trace_hash:22aae1a612928ef65d14d14f72a36b8c5b676cb36cb6f972cee68343313540a0 | ||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-10-08 20:20:20 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
The alert told you what to do. The app should not require this. Do you know what this tool was written with? This happens when I start puredata-extended application. Don't know what it was written with, I got it form RPM Fusion. (In reply to comment #1) > The alert told you what to do. The app should not require this. Do you know > what this tool was written with? This happens when I start puredata-extended application. Don't know what it was written with, I got it from RPM Fusion. If you run execstack on it what does it say. execstack -q /usr/bin/pdextended You can turn on the boolean if you want and the app is blowing up. it returns -/usr/bin/pdextended On startup of the application, PureData shows error: usr/lib/pd-extended/extra/pdp/pdp.pd_linux: cannot enable executable stack as shared object requires: Permission denied. pdp: can't load library I'll try to to find if there's info about this on puredata forums, there seems to be a lot of talk about the problem Thanks, M. execstack -q /usr/lib/pd-extended/extra/pdp/pdp.pd_linux |
SELinux is preventing /usr/bin/pdextended from using the 'execstack' accesses on a process. ***** Plugin allow_execstack (53.1 confidence) suggests ******************** If you believe that None should not require execstack Then you should clear the execstack flag and see if /usr/bin/pdextended works correctly. Report this as a bug on None. You can clear the exestack flag by executing: Do execstack -c None ***** Plugin catchall_boolean (42.6 confidence) suggests ******************* If you want to allow unconfined executables to make their stack executable. This should never, ever be necessary. Probably indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla Then you must tell SELinux about this by enabling the 'allow_execstack' boolean. Do setsebool -P allow_execstack 1 ***** Plugin catchall (5.76 confidence) suggests *************************** If you believe that pdextended should be allowed execstack access on processes labeled unconfined_t 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 pdextended /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp 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 Unknown [ process ] Source pdextended Source Path /usr/bin/pdextended Port <Unknown> Host (removed) Source RPM Packages pd-extended-0.42.5-1.fc14.ccrma Target RPM Packages Policy RPM selinux-policy-3.9.7-42.fc14 Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux muwa 2.6.35.13-92.fc14.i686 #1 SMP Sat May 21 17:39:42 UTC 2011 i686 i686 Alert Count 1 First Seen Mon 25 Jul 2011 02:53:39 PM EDT Last Seen Mon 25 Jul 2011 02:53:39 PM EDT Local ID f1dcf51e-f4c9-490d-ad78-cad7e581c93c Raw Audit Messages type=AVC msg=audit(1311620019.594:18): avc: denied { execstack } for pid=2077 comm="pdextended" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process type=SYSCALL msg=audit(1311620019.594:18): arch=i386 syscall=mprotect success=no exit=EACCES a0=bfec6000 a1=1000 a2=1000007 a3=bfec2980 items=0 ppid=1680 pid=2077 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm=pdextended exe=/usr/bin/pdextended subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) Hash: pdextended,unconfined_t,unconfined_t,process,execstack audit2allow #============= unconfined_t ============== #!!!! This avc can be allowed using the boolean 'allow_execstack' allow unconfined_t self:process execstack; audit2allow -R #============= unconfined_t ============== #!!!! This avc can be allowed using the boolean 'allow_execstack' allow unconfined_t self:process execstack;