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Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
As suggested by Olaf Kirch <okir@suse.de>, use setfsuid() rather than
seteuid() when creating a gss context. This prevents users from using
credentials that do not belong to them, while also preventing them from
doing things like killing, renicing, or changing the priority of the
gssd process while it is processing the context creation.
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Various paranoia checks:
gssd_proc.c: pass max_field sizes to sscanf to avoid buffer
overflow
svcgssd_proc.c: range_check name.length, to ensure name.length+1
doesn't wrap
idmapd.c(nfsdcb): make sure at least one byte is read before
zeroing the last byte that was read, otherwise memory corruption
is possible.
Found by SuSE security audit.
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Fix memory leak of the AUTH structure on context negotiations
Free AUTH structure after completing context negotiation and sending
context information to the kernel.
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From: Vince Busam <vbusam@google.com>
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Don't unnecessarily close and re-open all pipes after every DNOTIFY
signal. These unnecessary closes were triggering a kernel Oops.
Original patch modified to correct segfault when unmounting last
NFSv4 mount.
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The gssd code should not know about the glue layer's context structure.
A previous patch added gss_export_lucid_sec_context() and
gss_free_lucid_sec_context() functions to the gssapi glue layer.
Use these functions rather than calling directly to the Kerberos
gssapi code (which requires the Kerberos context handle rather
than the glue's context handle).
(really this time)
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portion of clp->servicename rather than hard-coding "nfs".
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