Bug 133373
| Summary: | /proc/modules is allowed to be inherited by child processes | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Russell Coker <russell> | ||||
| Component: | kudzu | Assignee: | Bill Nottingham <notting> | ||||
| Status: | CLOSED RAWHIDE | QA Contact: | David Lawrence <dkl> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 3 | CC: | mitr, rvokal | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | 1.1.91-1 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2004-09-30 05:06:36 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: | |||||||
| Bug Depends On: | |||||||
| Bug Blocks: | 123268, 131774 | ||||||
| Attachments: |
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Created attachment 104556 [details]
Fix FILE leak in kudzu
Seems to be caused by a FILE leak in kudzu.
The file handle is labeled with domain firstboot_t. This means that a program running in the firstboot_t domain opened the file handle. kudzu runs in domain kudzu_t. Unless firstboot links in code from kudzu.c I don't think that the patch will entirely fix the problem. That's OK, it'll probably fix other problems so it's worth doing. The whole chain (I think) is: firstboot /usr/share/firstboot/modules/soundcard_gui.py system-config-soundcard /usr/lib/python2.3/site-packages/kudzu.py /usr/lib/python2.3/site-packages/_kudzumodule.so ... which indeed shares code with kudzu. Fixed in CVS, will be in 1.1.89-1. Erm, make that 1.1.91-1. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (compatible; Konqueror/3.3; Linux) (KHTML, like Gecko) Description of problem: As can be seen in the below messages a file handle for /proc/modules is inherited by child processes of firstboot (in this case ntpdate). The file handle should either be closed before process execution or should be marked close-on-exec. audit(1095950199.466:0): avc: denied { use } for pid=2841 exe=/usr/sbin/ntpdate path=/proc/modules dev=proc ino=-268435437 scontext=system_u:system_r:ntpd_ttcontext=system_u:system_r:firstboot_t tclass=fd audit(1095950199.488:0): avc: denied { use } for pid=2841 exe=/usr/sbin/ntpdate path=/proc/modules dev=proc ino=-268435437 scontext=system_u:system_r:ntpd_ttcontext=system_u:system_r:firstboot_t tclass=fd Version-Release number of selected component (if applicable): 1.3.25-1 How reproducible: Always Steps to Reproduce: boot with SE Linux strict policy and observe the avc messages. Additional info: