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| author | Jianglei Nie <niejianglei2021@163.com> | 2022-03-09 15:18:24 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-03-11 01:49:21 +0300 |
| commit | bc0e610a6eb0d46e4123fafdbe5e6141d9fff3be (patch) | |
| tree | f8bc90a5e30554f524a5e1853461d62555c7d9fc /drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c | |
| parent | 633593a808980f82d251d0ca89730d8bb8b0220c (diff) | |
| download | linux-bc0e610a6eb0d46e4123fafdbe5e6141d9fff3be.tar.xz | |
net: arc_emac: Fix use after free in arc_mdio_probe()
If bus->state is equal to MDIOBUS_ALLOCATED, mdiobus_free(bus) will free
the "bus". But bus->name is still used in the next line, which will lead
to a use after free.
We can fix it by putting the name in a local variable and make the
bus->name point to the rodata section "name",then use the name in the
error message without referring to bus to avoid the uaf.
Fixes: 95b5fc03c189 ("net: arc_emac: Make use of the helper function dev_err_probe()")
Signed-off-by: Jianglei Nie <niejianglei2021@163.com>
Link: https://lore.kernel.org/r/20220309121824.36529-1-niejianglei2021@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c')
0 files changed, 0 insertions, 0 deletions