diff mbox series

[10/12] smb: client: fix potential UAF in smb2_is_network_name_deleted()

Message ID 20240402193404.236159-10-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, 7:34 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/smb2ops.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index 35bf7eb315cd..1506a0eb10ba 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -2480,6 +2480,8 @@  smb2_is_network_name_deleted(char *buf, struct TCP_Server_Info *server)
 
 	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) {
 			if (tcon->tid == le32_to_cpu(shdr->Id.SyncId.TreeId)) {
 				spin_lock(&tcon->tc_lock);