Messages in this thread Patch in this message | | | From | Rickard Strandqvist <> | Subject | [PATCH] isdn: hisax: l3dss1.c: Fix for possible null pointer dereference | Date | Sat, 17 May 2014 19:18:21 +0200 |
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There is otherwise a risk of a possible null pointer dereference.
Was largely found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> --- drivers/isdn/hisax/l3dss1.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/isdn/hisax/l3dss1.c b/drivers/isdn/hisax/l3dss1.c index cda7006..3ea6257 100644 --- a/drivers/isdn/hisax/l3dss1.c +++ b/drivers/isdn/hisax/l3dss1.c @@ -2208,8 +2208,12 @@ static int l3dss1_cmd_global(struct PStack *st, isdn_ctrl *ic) { free_invoke_id(st, id); return (-2); } - pc->prot.dss1.ll_id = ic->parm.dss1_io.ll_id; /* remember id */ - pc->prot.dss1.proc = ic->parm.dss1_io.proc; /* and procedure */ + + if (pc) + { + pc->prot.dss1.ll_id = ic->parm.dss1_io.ll_id; /* remember id */ + pc->prot.dss1.proc = ic->parm.dss1_io.proc; /* and procedure */ + } if (!(skb = l3_alloc_skb(l))) { free_invoke_id(st, id); -- 1.7.10.4
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