diff options
| author | Namjae Jeon <[email protected]> | 2023-10-05 11:22:03 +0900 |
|---|---|---|
| committer | Steve French <[email protected]> | 2023-10-04 21:56:28 -0500 |
| commit | 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e (patch) | |
| tree | da5a5b5679aa447860e4581d4773b72fc04924e8 /drivers/usb/cdns3/cdns3-plat.c | |
| parent | 75ac9a3dd65f7eab4d12b0a0f744234b5300a491 (diff) | |
ksmbd: fix race condition between tree conn lookup and disconnect
if thread A in smb2_write is using work-tcon, other thread B use
smb2_tree_disconnect free the tcon, then thread A will use free'd tcon.
Time
+
Thread A | Thread A
smb2_write | smb2_tree_disconnect
|
|
| kfree(tree_conn)
|
// UAF! |
work->tcon->share_conf |
+
This patch add state, reference count and lock for tree conn to fix race
condition issue.
Reported-by: luosili <[email protected]>
Signed-off-by: Namjae Jeon <[email protected]>
Signed-off-by: Steve French <[email protected]>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-plat.c')
0 files changed, 0 insertions, 0 deletions