github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-25 07:33:19 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

net: ethernet: mtk_eth_soc: fix off by one check of ARRAY_SIZE

Browse Source 
In mtk_wed_tx_ring_setup(.., int idx, ..), idx is used as an index here
  struct mtk_wed_ring *ring = &dev->tx_ring[idx];

The bounds of idx are checked here
  BUG_ON(idx > ARRAY_SIZE(dev->tx_ring));

If idx is the size of the array, it will pass this check and overflow.
So change the check to >= .

Fixes: 804775dfc2 ("net: ethernet: mtk_eth_soc: add support for Wireless Ethernet Dispatch (WED)")
Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20220716214654.1540240-1-trix@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Tom Rix 2022-07-16 17:46:54 -04:00 committed by Jakub Kicinski
parent b6224a36de
commit 3696c952da
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/mediatek/mtk_wed.c
View File

@ -651,7 +651,7 @@ mtk_wed_tx_ring_setup(struct mtk_wed_device *dev, int idx, void __iomem *regs)
* WDMA RX.
*/
BUG_ON(idx > ARRAY_SIZE(dev->tx_ring));
BUG_ON(idx >= ARRAY_SIZE(dev->tx_ring));
if (mtk_wed_ring_alloc(dev, ring, MTK_WED_TX_RING_SIZE))
return -ENOMEM;