Re: newrole: double free or corruption

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On Mon, Dec 28, 2009 at 06:29:02PM -0500, Andy Warner wrote:
> Got the following output from using the newrole command on Fedora 12.
> Not sure where to properly report such bugs.
> 
> If it helps, the rubix_remote_client_r role transition should fail (as
> it does) as there are no role transition rules for it. The role is
> associated with the current SELinux user.
> 
> I believe my system just updated to the newest newrole package.
> [warner@Fedora12-Dev ~]$ yum info policycoreutils
> Loaded plugins: presto, refresh-packagekit
> Installed Packages
> Name       : policycoreutils
> Arch       : i686
> Version    : 2.0.78
> Release    : 3.fc12
> Size       : 3.3 M
> Repo       : installed
> >From repo  : updates
> 
> Error output from newrole follows:
> 
> [warner@Fedora12-Dev ~]$ newrole -r rubix_remote_client_r

Does it behave as expected if you use sudo instead?

sudo -r rubix_remote_client_r -t rubix_remote_client_t -s

Eitherway looks like a bug in newrole

> Password:
> failed to exec shell
> : Permission denied
> *** glibc detected *** newrole: double free or corruption (out):
> 0x01726138 ***
> ======= Backtrace: =========
> /lib/libc.so.6(-0xff836d9f)[0x233261]
> /lib/libselinux.so.1(freecon+0x1e)[0x9fd42e]
> newrole(main+0x6eb)[0x119d6b]
> /lib/libc.so.6(__libc_start_main+0xe6)[0x1dbbb6]
> newrole(+0x16f1)[0x1186f1]
> ======= Memory map: ========
> 00117000-0011d000 r-xp 00000000 fd:00 126525     /usr/bin/newrole
> 0011d000-0011e000 r--p 00005000 fd:00 126525     /usr/bin/newrole
> 0011e000-0011f000 rw-p 00006000 fd:00 126525     /usr/bin/newrole
> 0011f000-00135000 r-xp 00000000 fd:00 56679      /lib/libpthread-2.11.so
> 00135000-00136000 r--p 00015000 fd:00 56679      /lib/libpthread-2.11.so
> 00136000-00137000 rw-p 00016000 fd:00 56679      /lib/libpthread-2.11.so
> 00137000-00139000 rw-p 00000000 00:00 0
> 001a5000-001c3000 r-xp 00000000 fd:00 56677      /lib/ld-2.11.so
> 001c3000-001c4000 r--p 0001d000 fd:00 56677      /lib/ld-2.11.so
> 001c4000-001c5000 rw-p 0001e000 fd:00 56677      /lib/ld-2.11.so
> 001c5000-00333000 r-xp 00000000 fd:00 56678      /lib/libc-2.11.so
> 00333000-00334000 ---p 0016e000 fd:00 56678      /lib/libc-2.11.so
> 00334000-00336000 r--p 0016e000 fd:00 56678      /lib/libc-2.11.so
> 00336000-00337000 rw-p 00170000 fd:00 56678      /lib/libc-2.11.so
> 00337000-0033a000 rw-p 00000000 00:00 0
> 0055f000-00560000 r-xp 00000000 00:00 0          [vdso]
> 005f6000-005fa000 r-xp 00000000 fd:00 1331       /lib/libattr.so.1.1.0
> 005fa000-005fb000 rw-p 00003000 fd:00 1331       /lib/libattr.so.1.1.0
> 0062d000-00638000 r-xp 00000000 fd:00 10441      /lib/libnss_files-2.11.so
> 00638000-00639000 r--p 0000a000 fd:00 10441      /lib/libnss_files-2.11.so
> 00639000-0063a000 rw-p 0000b000 fd:00 10441      /lib/libnss_files-2.11.so
> 008a3000-008a5000 r-xp 00000000 fd:00 15448      /lib/libpam_misc.so.0.82.0
> 008a5000-008a6000 rw-p 00001000 fd:00 15448      /lib/libpam_misc.so.0.82.0
> 00928000-0092c000 r-xp 00000000 fd:00 1332       /lib/libcap.so.2.16
> 0092c000-0092d000 rw-p 00003000 fd:00 1332       /lib/libcap.so.2.16
> 00992000-00995000 r-xp 00000000 fd:00 56684      /lib/libdl-2.11.so
> 00995000-00996000 r--p 00002000 fd:00 56684      /lib/libdl-2.11.so
> 00996000-00997000 rw-p 00003000 fd:00 56684      /lib/libdl-2.11.so
> 009f3000-00a0f000 r-xp 00000000 fd:00 56687      /lib/libselinux.so.1
> 00a0f000-00a10000 r--p 0001b000 fd:00 56687      /lib/libselinux.so.1
> 00a10000-00a11000 rw-p 0001c000 fd:00 56687      /lib/libselinux.so.1
> 00c8b000-00c97000 r-xp 00000000 fd:00 15447      /lib/libpam.so.0.82.1
> 00c97000-00c98000 rw-p 0000b000 fd:00 15447      /lib/libpam.so.0.82.1
> 00e6f000-00e85000 r-xp 00000000 fd:00 15446      /lib/libaudit.so.1.0.0
> 00e85000-00e86000 r--p 00015000 fd:00 15446      /lib/libaudit.so.1.0.0
> 00e86000-00e87000 rw-p 00016000 fd:00 15446      /lib/libaudit.so.1.0.0
> 00ea9000-00ec6000 r-xp 00000000 fd:00 51325     
> /lib/libgcc_s-4.4.2-20091027.so.1
> 00ec6000-00ec7000 rw-p 0001c000 fd:00 51325     
> /lib/libgcc_s-4.4.2-20091027.so.1
> 00f05000-00f0c000 r-xp 00000000 fd:00 56680      /lib/librt-2.11.so
> 00f0c000-00f0d000 r--p 00006000 fd:00 56680      /lib/librt-2.11.so
> 00f0d000-00f0e000 rw-p 00007000 fd:00 56680      /lib/librt-2.11.so
> 01724000-017a9000 rw-p 00000000 00:00 0          [heap]
> b7627000-b7827000 r--p 00000000 fd:00 12545     
> /usr/lib/locale/locale-archive
> b7827000-b782a000 rw-p 00000000 00:00 0
> b783b000-b7842000 r--s 00000000 fd:00 10739     
> /usr/lib/gconv/gconv-modules.cache
> b7842000-b7843000 rw-p 00000000 00:00 0
> bfcce000-bfce3000 rw-p 00000000 00:00 0          [stack]
> [warner@Fedora12-Dev ~]$
> 

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