5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Antipov <dmantipov@xxxxxxxxx>
[ Upstream commit 15ea13b1b1fbf6364d4cd568e65e4c8479632999 ]
Although not reproduced in practice, these two cases may be
considered by UBSAN as off-by-one errors. So fix them in the
same way as in commit a26a5107bc52 ("wifi: cfg80211: fix UBSAN
noise in cfg80211_wext_siwscan()").
Fixes: 807f8a8c3004 ("cfg80211/nl80211: add support for scheduled scans")
Fixes: 5ba63533bbf6 ("cfg80211: fix alignment problem in scan request")
Signed-off-by: Dmitry Antipov <dmantipov@xxxxxxxxx>
Link: https://patch.msgid.link/20240909090806.1091956-1-dmantipov@xxxxxxxxx
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/wireless/nl80211.c | 3 ++-
net/wireless/sme.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index a46278cf67da9..d286a10f35522 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -8784,7 +8784,8 @@ nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
return ERR_PTR(-ENOMEM);
if (n_ssids)
- request->ssids = (void *)&request->channels[n_channels];
+ request->ssids = (void *)request +
+ struct_size(request, channels, n_channels);
request->n_ssids = n_ssids;
if (ie_len) {
if (n_ssids)
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index 1591cd68fc583..3c29e9bf66b4e 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -115,7 +115,8 @@ static int cfg80211_conn_scan(struct wireless_dev *wdev)
n_channels = i;
}
request->n_channels = n_channels;
- request->ssids = (void *)&request->channels[n_channels];
+ request->ssids = (void *)request +
+ struct_size(request, channels, n_channels);
request->n_ssids = 1;
memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
--
2.43.0
