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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2018-06-05 13:31:39 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2018-06-27 18:06:42 +0200 |
| commit | ae636fb1554833ee5133ca47bf4b2791b6739c52 (patch) | |
| tree | 8804c6230882f956be4fcf0d7f9dd62ca78a1a7e /arch/openrisc | |
| parent | atmel: use memdup_user to simplify the code (diff) | |
| download | linux-ae636fb1554833ee5133ca47bf4b2791b6739c52.tar.xz linux-ae636fb1554833ee5133ca47bf4b2791b6739c52.zip | |
rndis_wlan: potential buffer overflow in rndis_wlan_auth_indication()
This is a static checker fix, not something I have tested. The issue
is that on the second iteration through the loop, we jump forward by
le32_to_cpu(auth_req->length) bytes. The problem is that if the length
is more than "buflen" then we end up with a negative "buflen". A
negative buflen is type promoted to a high positive value and the loop
continues but it's accessing beyond the end of the buffer.
I believe the "auth_req->length" comes from the firmware and if the
firmware is malicious or buggy, you're already toasted so the impact of
this bug is probably not very severe.
Fixes: 030645aceb3d ("rndis_wlan: handle 802.11 indications from device")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'arch/openrisc')
0 files changed, 0 insertions, 0 deletions