diff options
| author | Rasmus Villemoes <rasmus.villemoes@prevas.dk> | 2020-12-18 11:55:38 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-12 20:10:17 +0100 |
| commit | ddeb4c171c36fb2f050481e2919059b8af75ad0a (patch) | |
| tree | 0183e98c4f6906d0e300719bddd911f3d427c8e3 /drivers | |
| parent | cfc650c25af03a0326e05caf2c0d7506c055f4b2 (diff) | |
ethernet: ucc_geth: fix use-after-free in ucc_geth_remove()
[ Upstream commit e925e0cd2a705aaacb0b907bb3691fcac3a973a4 ]
ugeth is the netdiv_priv() part of the netdevice. Accessing the memory
pointed to by ugeth (such as done by ucc_geth_memclean() and the two
of_node_puts) after free_netdev() is thus use-after-free.
Fixes: 80a9fad8e89a ("ucc_geth: fix module removal")
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/freescale/ucc_geth.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c index 5de6f7c73c1f..04ebfd543867 100644 --- a/drivers/net/ethernet/freescale/ucc_geth.c +++ b/drivers/net/ethernet/freescale/ucc_geth.c @@ -3947,12 +3947,12 @@ static int ucc_geth_remove(struct platform_device* ofdev) struct device_node *np = ofdev->dev.of_node; unregister_netdev(dev); - free_netdev(dev); ucc_geth_memclean(ugeth); if (of_phy_is_fixed_link(np)) of_phy_deregister_fixed_link(np); of_node_put(ugeth->ug_info->tbi_node); of_node_put(ugeth->ug_info->phy_node); + free_netdev(dev); return 0; } |