Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e8a285b7b10029c3da7e9bbaa1659e7e08178912
Commit: e8a285b7b10029c3da7e9bbaa1659e7e08178912
Parent: b1b2e7cf4a9742f61d76fcb419b1fd13159876a5
Author: Jesper Juhl <[EMAIL PROTECTED]>
AuthorDate: Tue Oct 16 01:27:52 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Tue Oct 16 09:43:10 2007 -0700
isdn: guard against a potential NULL pointer dereference in
old_capi_manufacturer()
In drivers/isdn/capi/kcapi.c::old_capi_manufacturer(), if the call to
get_capi_ctr_by_nr(ldef.contr); in line 823 returns NULL, then we'll be
dereferencing a NULL pointer in the very next line.
(Found by Coverity checker as bug #402)
Signed-off-by: Jesper Juhl <[EMAIL PROTECTED]>
Acked-by: Karsten Keil <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/isdn/capi/kcapi.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/isdn/capi/kcapi.c b/drivers/isdn/capi/kcapi.c
index 9f73bc2..f555318 100644
--- a/drivers/isdn/capi/kcapi.c
+++ b/drivers/isdn/capi/kcapi.c
@@ -821,6 +821,8 @@ static int old_capi_manufacturer(unsigned int cmd, void
__user *data)
return -EFAULT;
}
card = get_capi_ctr_by_nr(ldef.contr);
+ if (!card)
+ return -EINVAL;
card = capi_ctr_get(card);
if (!card)
return -ESRCH;
-
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