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authorColin Ian King <colin.king@canonical.com>2017-01-20 13:01:57 +0000
committerDavid S. Miller <davem@davemloft.net>2017-01-20 11:26:01 -0500
commit0e73fc9a56f22f2eec4d2b2910c649f7af67b74d (patch)
tree23560da128b25833d3579b9dd8bafd4628b49502 /net
parente363116b90906f326c9cde5473b4b9a99ba476df (diff)
downloadlinux-0e73fc9a56f22f2eec4d2b2910c649f7af67b74d.tar.bz2
net: sctp: fix array overrun read on sctp_timer_tbl
The comparison on the timeout can lead to an array overrun read on sctp_timer_tbl because of an off-by-one error. Fix this by using < instead of <= and also compare to the array size rather than SCTP_EVENT_TIMEOUT_MAX. Fixes CoverityScan CID#1397639 ("Out-of-bounds read") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/sctp/debug.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/debug.c b/net/sctp/debug.c
index 95d7b15dad21..e371a0d90068 100644
--- a/net/sctp/debug.c
+++ b/net/sctp/debug.c
@@ -166,7 +166,7 @@ static const char *const sctp_timer_tbl[] = {
/* Lookup timer debug name. */
const char *sctp_tname(const sctp_subtype_t id)
{
- if (id.timeout <= SCTP_EVENT_TIMEOUT_MAX)
+ if (id.timeout < ARRAY_SIZE(sctp_timer_tbl))
return sctp_timer_tbl[id.timeout];
return "unknown_timer";
}