diff options
| author | Namjae Jeon <[email protected]> | 2023-10-04 18:25:01 +0900 |
|---|---|---|
| committer | Steve French <[email protected]> | 2023-10-04 20:21:48 -0500 |
| commit | 53ff5cf89142b978b1a5ca8dc4d4425e6a09745f (patch) | |
| tree | 108b6e8f2851d06b3ed9ad4d83d09e29aad2f107 /drivers/gpu/drm/lima/lima_drv.c | |
| parent | 8a749fd1a8720d4619c91c8b6e7528c0a355c0aa (diff) | |
ksmbd: fix race condition between session lookup and expire
Thread A + Thread B
ksmbd_session_lookup | smb2_sess_setup
sess = xa_load |
|
| xa_erase(&conn->sessions, sess->id);
|
| ksmbd_session_destroy(sess) --> kfree(sess)
|
// UAF! |
sess->last_active = jiffies |
+
This patch add rwsem to fix race condition between ksmbd_session_lookup
and ksmbd_expire_session.
Reported-by: luosili <[email protected]>
Signed-off-by: Namjae Jeon <[email protected]>
Signed-off-by: Steve French <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/lima/lima_drv.c')
0 files changed, 0 insertions, 0 deletions