[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH for-4.15] tools/xenstored: Avoid dereferencing a NULL pointer if LiveUpdate is failing
Julien Grall writes ("[PATCH for-4.15] tools/xenstored: Avoid dereferencing a NULL pointer if LiveUpdate is failing"): > From: Julien Grall <jgrall@xxxxxxxxxx> > > In case of failure in do_lu_start(), XenStored will first free lu_start > and then try to dereference it. > > This will result to a NULL dereference as the destruction callback will > set lu_start to NULL. > > The crash can be avoided by freeing lu_start *after* the reply has been > set. > > Fixes: af216a99fb4a ("tools/xenstore: add the basic framework for doing the > live update") > Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx> Release-Acked-by: Ian Jackson <iwj@xxxxxxxxxxxxxx>
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