diff mbox series

[04/12] smb: client: fix potential UAF in cifs_stats_proc_show()

Message ID 20240402193404.236159-4-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

Commit Message

Paulo Alcantara April 2, 2024, 7:33 p.m. UTC 
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/cifs_debug.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/fs/smb/client/cifs_debug.c b/fs/smb/client/cifs_debug.c
index 8535c9907462..c71ae5c04306 100644
--- a/fs/smb/client/cifs_debug.c
+++ b/fs/smb/client/cifs_debug.c
@@ -759,6 +759,8 @@  static int cifs_stats_proc_show(struct seq_file *m, void *v)
 			}
 #endif /* STATS2 */
 		list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
+			if (cifs_ses_exiting(ses))
+				continue;
 			list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
 				i++;
 				seq_printf(m, "\n%d) %s", i, tcon->tree_name);