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authorJ. Bruce Fields <bfields@redhat.com>2013-08-07 11:41:49 -0400
committerJ. Bruce Fields <bfields@redhat.com>2013-08-07 12:05:51 -0400
commitc47205914cf5a8cf564ca560aa6eaa2287867e58 (patch)
treefab725d3eea67979da88221642fca0cb91d34412 /fs
parent7193bd17ea92c4c89016c304362c9be93ce50050 (diff)
downloadop-kernel-dev-c47205914cf5a8cf564ca560aa6eaa2287867e58.zip
op-kernel-dev-c47205914cf5a8cf564ca560aa6eaa2287867e58.tar.gz
nfsd4: Fix MACH_CRED NULL dereference
Fixes a NULL-dereference on attempts to use MACH_CRED protection over auth_sys. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfsd/nfs4state.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 280acef..43f4229 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1264,6 +1264,8 @@ static bool svc_rqst_integrity_protected(struct svc_rqst *rqstp)
struct svc_cred *cr = &rqstp->rq_cred;
u32 service;
+ if (!cr->cr_gss_mech)
+ return false;
service = gss_pseudoflavor_to_service(cr->cr_gss_mech, cr->cr_flavor);
return service == RPC_GSS_SVC_INTEGRITY ||
service == RPC_GSS_SVC_PRIVACY;
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