6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Paulo Alcantara <pc@xxxxxxxxxxxxx>
commit e0e50401cc3921c9eaf1b0e667db174519ea939f upstream.
Skip sessions that are being teared down (status == SES_EXITING) to
avoid UAF.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Paulo Alcantara (Red Hat) <pc@xxxxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/smb/client/connect.c | 2 ++
1 file changed, 2 insertions(+)
--- a/fs/smb/client/connect.c
+++ b/fs/smb/client/connect.c
@@ -178,6 +178,8 @@ cifs_signal_cifsd_for_reconnect(struct T
spin_lock(&cifs_tcp_ses_lock);
list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) {
+ if (cifs_ses_exiting(ses))
+ continue;
spin_lock(&ses->chan_lock);
for (i = 0; i < ses->chan_count; i++) {
if (!ses->chans[i].server)
