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igmp, mld: Fix memory leak in igmpv3/mld_del_delrec()

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In function igmpv3/mld_add_delrec() we allocate pmc and put it in
idev->mc_tomb, so we should free it when we don't need it in del_delrec().
But I removed kfree(pmc) incorrectly in latest two patches. Now fix it.

Fixes: 24803f38a5 ("igmp: do not remove igmp souce list info when ...")
Fixes: 1666d49e1d ("mld: do not remove mld souce list info when ...")
Reported-by: Daniel Borkmann <[email protected]>
Signed-off-by: Hangbin Liu <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Hangbin Liu 2017-02-08 21:16:45 +08:00 • committed by David S. Miller
commit 9c8bb163ae
2 changed files with 2 additions and 0 deletions
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1
net/ipv6/mcast.c
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@ -779,6 +779,7 @@ static void mld_del_delrec(struct inet6_dev *idev, struct ifmcaddr6 *im)
psf->sf_crcount = im->mca_crcount;
}
in6_dev_put(pmc->idev);
kfree(pmc);
}
spin_unlock_bh(&im->mca_lock);
}