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| author | Tong Zhang <ztong0001@gmail.com> | 2021-03-07 22:25:30 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-08 15:16:30 -0800 |
| commit | 4416e98594dc04590ebc498fc4e530009535c511 (patch) | |
| tree | 6c24c4f105112d7a2b9105f65204ef22c7f2dd6e /drivers/atm | |
| parent | 3153724fc084d8ef640c611f269ddfb576d1dcb1 (diff) | |
| download | linux-stable-4416e98594dc04590ebc498fc4e530009535c511.tar.gz linux-stable-4416e98594dc04590ebc498fc4e530009535c511.tar.bz2 linux-stable-4416e98594dc04590ebc498fc4e530009535c511.zip | |
atm: idt77252: fix null-ptr-dereference
this one is similar to the phy_data allocation fix in uPD98402, the
driver allocate the idt77105_priv and store to dev_data but later
dereference using dev->dev_data, which will cause null-ptr-dereference.
fix this issue by changing dev_data to phy_data so that PRIV(dev) can
work correctly.
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/atm')
| -rw-r--r-- | drivers/atm/idt77105.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/atm/idt77105.c b/drivers/atm/idt77105.c index 3c081b6171a8..bfca7b8a6f31 100644 --- a/drivers/atm/idt77105.c +++ b/drivers/atm/idt77105.c @@ -262,7 +262,7 @@ static int idt77105_start(struct atm_dev *dev) { unsigned long flags; - if (!(dev->dev_data = kmalloc(sizeof(struct idt77105_priv),GFP_KERNEL))) + if (!(dev->phy_data = kmalloc(sizeof(struct idt77105_priv),GFP_KERNEL))) return -ENOMEM; PRIV(dev)->dev = dev; spin_lock_irqsave(&idt77105_priv_lock, flags); @@ -337,7 +337,7 @@ static int idt77105_stop(struct atm_dev *dev) else idt77105_all = walk->next; dev->phy = NULL; - dev->dev_data = NULL; + dev->phy_data = NULL; kfree(walk); break; } |