diff options
| author | M A Ramdhan <[email protected]> | 2023-07-05 12:15:30 -0400 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2023-07-06 19:10:49 -0700 |
| commit | 0323bce598eea038714f941ce2b22541c46d488f (patch) | |
| tree | ad4ddf18f7d87b6201bc62b1d94245cc4a07e8a6 /drivers/usb/cdns3/cdns3-trace.c | |
| parent | 525c469e5de9bf7e53574396196e80fc716ac9eb (diff) | |
net/sched: cls_fw: Fix improper refcount update leads to use-after-free
In the event of a failure in tcf_change_indev(), fw_set_parms() will
immediately return an error after incrementing or decrementing
reference counter in tcf_bind_filter(). If attacker can control
reference counter to zero and make reference freed, leading to
use after free.
In order to prevent this, move the point of possible failure above the
point where the TC_FW_CLASSID is handled.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: M A Ramdhan <[email protected]>
Signed-off-by: M A Ramdhan <[email protected]>
Acked-by: Jamal Hadi Salim <[email protected]>
Reviewed-by: Pedro Tammela <[email protected]>
Message-ID: <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-trace.c')
0 files changed, 0 insertions, 0 deletions