diff options
| author | Namjae Jeon <[email protected]> | 2023-05-28 00:23:41 +0900 |
|---|---|---|
| committer | Steve French <[email protected]> | 2023-06-02 12:30:57 -0500 |
| commit | fc6c6a3c324c1b3e93a03d0cfa3749c781f23de0 (patch) | |
| tree | cb6c59a92e1e28c6ff85bec04a12353e4697aba7 /drivers/gpu/drm/omapdrm/omap_drv.c | |
| parent | f1a411873c85b642f13b01f21b534c2bab81fc1b (diff) | |
ksmbd: fix out-of-bound read in parse_lease_state()
This bug is in parse_lease_state, and it is caused by the missing check
of `struct create_context`. When the ksmbd traverses the create_contexts,
it doesn't check if the field of `NameOffset` and `Next` is valid,
The KASAN message is following:
[ 6.664323] BUG: KASAN: slab-out-of-bounds in parse_lease_state+0x7d/0x280
[ 6.664738] Read of size 2 at addr ffff888005c08988 by task kworker/0:3/103
...
[ 6.666644] Call Trace:
[ 6.666796] <TASK>
[ 6.666933] dump_stack_lvl+0x33/0x50
[ 6.667167] print_report+0xcc/0x620
[ 6.667903] kasan_report+0xae/0xe0
[ 6.668374] kasan_check_range+0x35/0x1b0
[ 6.668621] parse_lease_state+0x7d/0x280
[ 6.668868] smb2_open+0xbe8/0x4420
[ 6.675137] handle_ksmbd_work+0x282/0x820
Use smb2_find_context_vals() to find smb2 create request lease context.
smb2_find_context_vals validate create context fields.
Cc: [email protected]
Reported-by: Chih-Yen Chang <[email protected]>
Tested-by: Chih-Yen Chang <[email protected]>
Signed-off-by: Namjae Jeon <[email protected]>
Signed-off-by: Steve French <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/omapdrm/omap_drv.c')
0 files changed, 0 insertions, 0 deletions