Messages in this thread Patch in this message | | | From | Jesper Juhl <> | Subject | [PATCH] fix mem-leak in netfilter | Date | Sun, 7 May 2006 04:26:10 +0200 |
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The Coverity checker spotted that we may leak 'hold' in net/ipv4/netfilter/ipt_recent.c::checkentry() when the following is true : if (!curr_table->status_proc) { ... if(!curr_table) { ... return 0; <-- here we leak. Simply moving an existing vfree(hold); up a bit avoids the possible leak.
(please keep me on CC when replying since I'm not subscribed to netfilter-devel)
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> ---
net/ipv4/netfilter/ipt_recent.c | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-)
--- linux-2.6.17-rc3-git12-orig/net/ipv4/netfilter/ipt_recent.c 2006-05-07 03:25:38.000000000 +0200 +++ linux-2.6.17-rc3-git12/net/ipv4/netfilter/ipt_recent.c 2006-05-07 04:16:26.000000000 +0200 @@ -821,6 +821,7 @@ checkentry(const char *tablename, /* Create our proc 'status' entry. */ curr_table->status_proc = create_proc_entry(curr_table->name, ip_list_perms, proc_net_ipt_recent); if (!curr_table->status_proc) { + vfree(hold); printk(KERN_INFO RECENT_NAME ": checkentry: unable to allocate for /proc entry.\n"); /* Destroy the created table */ spin_lock_bh(&recent_lock); @@ -845,7 +846,6 @@ checkentry(const char *tablename, spin_unlock_bh(&recent_lock); vfree(curr_table->time_info); vfree(curr_table->hash_table); - vfree(hold); vfree(curr_table->table); vfree(curr_table); return 0;
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