Bug 460400
| Summary: | Need labeling and policy for libvirt cache directory | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | James Morris <jmorris> |
| Component: | selinux-policy | Assignee: | Daniel Walsh <dwalsh> |
| Status: | CLOSED RAWHIDE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | rawhide | CC: | berrange, jkubin, rjones |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2008-09-10 18:23:28 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
The virDomainMemoryPeek call in libvirt causes qemu-kvm to dump memory images into this directory. These memory images contain things like raw guest kernel memory, so could be potentially Very Sensitive. Fixed in selinux-policy-3.5.7-2.fc10 |
libvirt has a local cache directory which is used to manage temporary data for e.g. remote memory dumping of domains. /var/cache/libvirt needs an appropriate label (possibly a new one, as it can contain very sensitive information) and qemu_t needs to be able to access it. AVC denial info below. This can be triggered with the experimental virt-mem tools, and it would be nice to fix this before the tools are shipped. Source Context unconfined_u:system_r:qemu_t:s0 Target Context unconfined_u:object_r:var_t:s0 Target Objects ./qemu.mem.AMHMSe [ file ] Source qemu-kvm Source Path /usr/bin/qemu-kvm Port <Unknown> Host amd Source RPM Packages kvm-72-3.fc10 Target RPM Packages Policy RPM selinux-policy-3.5.1-4.fc10 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Enforcing Plugin Name catchall_file Host Name amd Platform Linux amd 2.6.27-rc4 #1 SMP Thu Aug 28 11:04:02 EST 2008 x86_64 x86_64 Alert Count 1 First Seen Thu Aug 28 13:09:25 2008 Last Seen Thu Aug 28 13:09:25 2008 Local ID a17b3120-c797-4906-addc-d371181efc51 Raw Audit Messages host=amd type=AVC msg=audit(1219892965.355:1129): avc: denied { write } for pid=2194 comm="qemu-kvm" name="qemu.mem.AMHMSe" dev=md0 ino=7061535 scontext=unconfined_u:system_r:qemu_t:s0 tcontext=unconfined_u:object_r:var_t:s0 tclass=file host=amd type=SYSCALL msg=audit(1219892965.355:1129): arch=c000003e syscall=2 success=yes exit=0 a0=25a8d50 a1=241 a2=1b6 a3=7fc7ff2056f0 items=0 ppid=3464 pid=2194 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=1 comm="qemu-kvm" exe="/usr/bin/qemu-kvm" subj=unconfined_u:system_r:qemu_t:s0 key=(null)