[RFC PATCH] wifi: mac80211: Replace strncpy() with strscpy()
From: I Hsin Cheng
Date: Thu Mar 27 2025 - 10:13:27 EST
The name of vif which is "vif_name" should be NULL-terminated to be a
valid string, however "strncpy()" doesn't guarantee that. Replace it
with "strscpy()" to make sure the content within "vif_name" is
NULL-terminated.
Link: https://github.com/KSPP/linux/issues/90
Signed-off-by: I Hsin Cheng <richard120310@xxxxxxxxx>
---
net/mac80211/trace.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index 72fad8ea8bb9..37f5b1c87709 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -1725,7 +1725,7 @@ TRACE_EVENT(drv_switch_vif_chanctx,
SWITCH_ENTRY_ASSIGN(vif.vif_type, vif->type);
SWITCH_ENTRY_ASSIGN(vif.p2p, vif->p2p);
SWITCH_ENTRY_ASSIGN(link_id, link_conf->link_id);
- strncpy(local_vifs[i].vif.vif_name,
+ strscpy(local_vifs[i].vif.vif_name,
sdata->name,
sizeof(local_vifs[i].vif.vif_name));
SWITCH_ENTRY_ASSIGN(old_chandef.control_freq,
--
2.43.0