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Subject[PATCH 4.14] atm:idt77252: Fix a kernel address leakage in idt77252
Date
Outputting kernel addresses will reveal the locations of kernel code
and data. And there is no need to print the address of
function idt77252_init in idt77252_init.
This case is similar to CVE-2018-7273[1].
Just remove the print statement.

[1] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7273

Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
---
drivers/atm/idt77252.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c
index 47f3c4a..76e7736 100644
--- a/drivers/atm/idt77252.c
+++ b/drivers/atm/idt77252.c
@@ -3743,8 +3743,6 @@ static int __init idt77252_init(void)
{
struct sk_buff *skb;

- printk("%s: at %p\n", __func__, idt77252_init);
-
if (sizeof(skb->cb) < sizeof(struct atm_skb_data) +
sizeof(struct idt77252_skb_prv)) {
printk(KERN_ERR "%s: skb->cb is too small (%lu < %lu)\n",
--
2.11.0
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