Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF. Signed-off-by: Paulo Alcantara (Red Hat) <pc@xxxxxxxxxxxxx> --- fs/smb/client/smb2misc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/smb/client/smb2misc.c b/fs/smb/client/smb2misc.c index 4abbf6545c9c..29b5ae881d48 100644 --- a/fs/smb/client/smb2misc.c +++ b/fs/smb/client/smb2misc.c @@ -700,6 +700,8 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server) /* look up tcon based on tid & uid */ spin_lock(&cifs_tcp_ses_lock); list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { + if (cifs_ses_exiting(ses)) + continue; list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { spin_lock(&tcon->open_file_lock); -- 2.44.0