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| author | Darren Jenkins <darrenrjenkins@gmail.com> | 2008-07-13 00:47:50 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-13 01:33:41 +0400 |
| commit | 4fc89e3911aa5357b55b85b60c4beaeb8a48a290 (patch) | |
| tree | 07a0c68e98efaf1fe60be003ed0b698d22a1c3e7 /drivers/isdn | |
| parent | 43f77e91eadbc290eb76a08110a039c809dde6c9 (diff) | |
| download | linux-4fc89e3911aa5357b55b85b60c4beaeb8a48a290.tar.xz | |
drivers/isdn/i4l/isdn_common.c fix small resource leak
Coverity CID: 1356 RESOURCE_LEAK
I found a very old patch for this that was Acked but did not get applied
https://lists.linux-foundation.org/pipermail/kernel-janitors/2006-September/016362.html
There looks to be a small leak in isdn_writebuf_stub() in isdn_common.c, when
copy_from_user() returns an un-copied data length (length != 0). The below
patch should be a minimally invasive fix.
Signed-off-by: Darren Jenkins <darrenrjenkins@gmailcom>
Acked-by: Karsten Keil <kkeil@suse.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/isdn')
| -rw-r--r-- | drivers/isdn/i4l/isdn_common.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c index 0f3c66de69bc..8d8c6b736167 100644 --- a/drivers/isdn/i4l/isdn_common.c +++ b/drivers/isdn/i4l/isdn_common.c @@ -1977,8 +1977,10 @@ isdn_writebuf_stub(int drvidx, int chan, const u_char __user * buf, int len) if (!skb) return -ENOMEM; skb_reserve(skb, hl); - if (copy_from_user(skb_put(skb, len), buf, len)) + if (copy_from_user(skb_put(skb, len), buf, len)) { + dev_kfree_skb(skb); return -EFAULT; + } ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, 1, skb); if (ret <= 0) dev_kfree_skb(skb); |