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Go Back   Linux Archive > Redhat > Fedora SELinux Support

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Old 01-16-2008, 05:08 PM
Stephen Smalley
Default more avc denials

On Wed, 2008-01-16 at 12:05 -0500, Michael Thomas wrote:
> While testing some changes to the cyphesis selinux module in Rawhide, I
> started getting the following denials:
> type=AVC msg=audit(1200547499.303:66): avc: denied { write } for
> pid=2722 comm="cyphesis" name="context" dev=selinuxfs ino=5
> scontext=unconfined_u:system_r:cyphesis_t:s0
> tcontext=system_ubject_r:security_t:s0 tclass=file
> type=AVC msg=audit(1200547499.303:67): avc: denied { check_context }
> for pid=2722 comm="cyphesis"
> scontext=unconfined_u:system_r:cyphesis_t:s0
> tcontext=system_ubject_r:security_t:s0 tclass=security
> What would cause these?

That suggests that cyphesis is invoking a libselinux function that is
validating a security context (by writing to /selinux/context).

Would be allowed by selinux_validate_context(cyphesis_t), if using
refpolicy interfaces and building via make
-f /usr/share/selinux/devel/Makefile.

Stephen Smalley
National Security Agency

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