diff options
Diffstat (limited to 'package/kernel/mac80211/patches/subsys/361-wifi-mac80211-Don-t-finalize-CSA-in-IBSS-mode-if-sta.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/subsys/361-wifi-mac80211-Don-t-finalize-CSA-in-IBSS-mode-if-sta.patch | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/package/kernel/mac80211/patches/subsys/361-wifi-mac80211-Don-t-finalize-CSA-in-IBSS-mode-if-sta.patch b/package/kernel/mac80211/patches/subsys/361-wifi-mac80211-Don-t-finalize-CSA-in-IBSS-mode-if-sta.patch deleted file mode 100644 index dd3e934c00..0000000000 --- a/package/kernel/mac80211/patches/subsys/361-wifi-mac80211-Don-t-finalize-CSA-in-IBSS-mode-if-sta.patch +++ /dev/null @@ -1,47 +0,0 @@ -From 552ba102a6898630a7d16887f29e606d6fabe508 Mon Sep 17 00:00:00 2001 -From: Siddh Raman Pant <code@siddh.me> -Date: Sun, 14 Aug 2022 20:45:12 +0530 -Subject: [PATCH] wifi: mac80211: Don't finalize CSA in IBSS mode if state is - disconnected - -commit 15bc8966b6d3a5b9bfe4c9facfa02f2b69b1e5f0 upstream. - -When we are not connected to a channel, sending channel "switch" -announcement doesn't make any sense. - -The BSS list is empty in that case. This causes the for loop in -cfg80211_get_bss() to be bypassed, so the function returns NULL -(check line 1424 of net/wireless/scan.c), causing the WARN_ON() -in ieee80211_ibss_csa_beacon() to get triggered (check line 500 -of net/mac80211/ibss.c), which was consequently reported on the -syzkaller dashboard. - -Thus, check if we have an existing connection before generating -the CSA beacon in ieee80211_ibss_finish_csa(). - -Cc: stable@vger.kernel.org -Fixes: cd7760e62c2a ("mac80211: add support for CSA in IBSS mode") -Link: https://syzkaller.appspot.com/bug?id=05603ef4ae8926761b678d2939a3b2ad28ab9ca6 -Reported-by: syzbot+b6c9fe29aefe68e4ad34@syzkaller.appspotmail.com -Signed-off-by: Siddh Raman Pant <code@siddh.me> -Tested-by: syzbot+b6c9fe29aefe68e4ad34@syzkaller.appspotmail.com -Link: https://lore.kernel.org/r/20220814151512.9985-1-code@siddh.me -Signed-off-by: Johannes Berg <johannes.berg@intel.com> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - net/mac80211/ibss.c | 4 ++++ - 1 file changed, 4 insertions(+) - ---- a/net/mac80211/ibss.c -+++ b/net/mac80211/ibss.c -@@ -534,6 +534,10 @@ int ieee80211_ibss_finish_csa(struct iee - - sdata_assert_lock(sdata); - -+ /* When not connected/joined, sending CSA doesn't make sense. */ -+ if (ifibss->state != IEEE80211_IBSS_MLME_JOINED) -+ return -ENOLINK; -+ - /* update cfg80211 bss information with the new channel */ - if (!is_zero_ether_addr(ifibss->bssid)) { - cbss = cfg80211_get_bss(sdata->local->hw.wiphy, |