Running latest Rawhide, targeted/enforcing. Plugging in an 'old USB CD drive', I got the following audit message: [root@localhost ~]# sealert -l fb77e7e0-3515-4866-9a8f-e1db99f9b4b8 Summary: SELinux is preventing ln(/bin/ln) (udev_t) "create" to <Unknown> (etc_t). Detailed Description: SELinux denied access requested by ln(/bin/ln). It is not expected that this access is required by ln(/bin/ln) and this access may signal an intrusion attempt. It is also possible that the specific version or configuration of the application is causing it to require additional access. Allowing Access: Sometimes labeling problems can cause SELinux denials. You could try to restore the default system file context for <Unknown>, restorecon -v <Unknown> If this does not work, there is currently no automatic way to allow this access. Instead, you can generate a local policy module to allow this access - see FAQ (http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Or you can disable SELinux protection altogether. Disabling SELinux protection is not recommended. Please file a bug report (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package. Additional Information: Source Context system_u:system_r:udev_t:SystemLow-SystemHigh Target Context system_u:object_r:etc_t Target Objects None [ lnk_file ] Source ln(/bin/ln) Port <Unknown> Host localhost.localdomain Source RPM Packages Target RPM Packages Policy RPM selinux-policy-3.2.5-8.fc9 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name catchall_file Host Name localhost.localdomain Platform Linux localhost.localdomain 2.6.24-0.136.rc6.git12.fc9 #1 SMP Sat Jan 5 12:46:45 EST 2008 i686 i686 Alert Count 2 First Seen Sun Jan 6 10:30:15 2008 Last Seen Sun Jan 6 10:30:15 2008 Local ID fb77e7e0-3515-4866-9a8f-e1db99f9b4b8 Line Numbers Raw Audit Messages host=localhost.localdomain type=AVC msg=audit(1199644215.878:31): avc: denied { create } for pid=6933 comm="ln" name=".is-writeable" scontext=system_u:system_r:udev_t:s0-s0:c0.c1023 tcontext=system_u:object_r:etc_t:s0 tclass=lnk_file host=localhost.localdomain type=SYSCALL msg=audit(1199644215.878:31): arch=40000003 syscall=83 success=no exit=-13 a0=bff3ddc3 a1=bff3ddcd a2=804f77c a3=0 items=0 ppid=6931 pid=6933 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) comm="ln" exe="/bin/ln" subj=system_u:system_r:udev_t:s0-s0:c0.c1023 key=(null) Here are the messages from /var/log/messages: Jan 6 10:30:05 localhost kernel: usb 2-2: new full speed USB device using uhci_hcd and address 4 Jan 6 10:30:06 localhost kernel: usb 2-2: configuration #1 chosen from 1 choice Jan 6 10:30:06 localhost kernel: scsi8 : SCSI emulation for USB Mass Storage devices Jan 6 10:30:06 localhost kernel: usb-storage: device found at 4 Jan 6 10:30:06 localhost kernel: usb-storage: waiting for device to settle before scanning Jan 6 10:30:11 localhost kernel: usb-storage: device scan complete Jan 6 10:30:11 localhost kernel: scsi 8:0:0:0: CD-ROM IBM USB CD-ROM 20A4 PQ: 0 ANSI: 0 CCS Jan 6 10:30:11 localhost kernel: sr1: scsi3-mmc drive: 10x/10x cd/rw xa/form2 cdda pop-up Jan 6 10:30:11 localhost kernel: sr 8:0:0:0: Attached scsi CD-ROM sr1 Jan 6 10:30:11 localhost kernel: sr 8:0:0:0: Attached scsi generic sg2 type 5 Jan 6 10:30:18 localhost setroubleshoot: #012 SELinux is preventing ln(/bin/ln) (udev_t) "create" to <Unknown> (etc_t).#012 For complete SELinux messages. run sealert -l fb77e7e0-3515-4866-9a8f-e1db99f9b4b8 Putting system in permissive mode, I get these: type=AVC msg=audit(1199645179.126:34): avc: denied { create } for pid=7782 comm="ln" name=".is-writeable" scontext=system_u:system_r:udev_t:s0-s0:c0.c1023 tcontext=system_u:object_r:etc_t:s0 tclass=lnk_file type=SYSCALL msg=audit(1199645179.126:34): arch=40000003 syscall=83 success=yes exit=0 a0=bfb56db6 a1=bfb56dc0 a2=804f77c a3=0 items=0 ppid=7780 pid=7782 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) comm="ln" exe="/bin/ln" subj=system_u:system_r:udev_t:s0-s0:c0.c1023 key=(null) type=AVC msg=audit(1199645179.245:35): avc: denied { unlink } for pid=7783 comm="rm" name=".is-writeable" dev=dm-0 ino=11076747 scontext=system_u:system_r:udev_t:s0-s0:c0.c1023 tcontext=system_u:object_r:etc_t:s0 tclass=lnk_file type=SYSCALL msg=audit(1199645179.245:35): arch=40000003 syscall=301 success=yes exit=0 a0=ffffff9c a1=bfa17dc0 a2=0 a3=bfa17dc0 items=0 ppid=7780 pid=7783 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) comm="rm" exe="/bin/rm" subj=system_u:system_r:udev_t:s0-s0:c0.c1023 key=(null) type=AVC msg=audit(1199645179.255:36): avc: denied { append } for pid=7780 comm="write_cd_rules" name="70-persistent-cd.rules" dev=dm-0 ino=11076866 scontext=system_u:system_r:udev_t:s0-s0:c0.c1023 tcontext=system_u:object_r:etc_t:s0 tclass=file type=SYSCALL msg=audit(1199645179.255:36): arch=40000003 syscall=5 success=yes exit=3 a0=8a98400 a1=8441 a2=1b6 a3=8441 items=0 ppid=7761 pid=7780 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) comm="write_cd_rules" exe="/bin/bash" subj=system_u:system_r:udev_t:s0-s0:c0.c1023 key=(null) udev issue? tom -- Tom London -- fedora-selinux-list mailing list fedora-selinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-selinux-list
