| Message ID | 20240402193404.236159-6-pc@manguebit.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [01/12] smb: client: fix potential UAF in cifs_debug_files_proc_show() | expand |
diff --git a/fs/smb/client/smb2misc.c b/fs/smb/client/smb2misc.c index 14d74ef70cc8..4abbf6545c9c 100644 --- a/fs/smb/client/smb2misc.c +++ b/fs/smb/client/smb2misc.c @@ -623,6 +623,8 @@ smb2_is_valid_lease_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); cifs_stats_inc(
Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF. Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com> --- fs/smb/client/smb2misc.c | 2 ++ 1 file changed, 2 insertions(+)