From f9dcdc7fefcab5ec9b15b0f3c87dfebef37ecaa3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 8 May 2018 09:40:43 +0200 Subject: kernel: mark source kernel for netfilter backports MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This helps keeping track on patches & adding new kernels in the future. Signed-off-by: Rafał Miłecki --- ...f_tables-fix-potential-NULL-ptr-deref-in-.patch | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 target/linux/generic/backport-4.14/334-v4.15-netfilter-nf_tables-fix-potential-NULL-ptr-deref-in-.patch (limited to 'target/linux/generic/backport-4.14/334-v4.15-netfilter-nf_tables-fix-potential-NULL-ptr-deref-in-.patch') diff --git a/target/linux/generic/backport-4.14/334-v4.15-netfilter-nf_tables-fix-potential-NULL-ptr-deref-in-.patch b/target/linux/generic/backport-4.14/334-v4.15-netfilter-nf_tables-fix-potential-NULL-ptr-deref-in-.patch new file mode 100644 index 0000000000..59c419e003 --- /dev/null +++ b/target/linux/generic/backport-4.14/334-v4.15-netfilter-nf_tables-fix-potential-NULL-ptr-deref-in-.patch @@ -0,0 +1,30 @@ +From: Hangbin Liu +Date: Mon, 25 Dec 2017 11:34:54 +0800 +Subject: [PATCH] netfilter: nf_tables: fix potential NULL-ptr deref in + nf_tables_dump_obj_done() + +If there is no NFTA_OBJ_TABLE and NFTA_OBJ_TYPE, the c.data will be NULL in +nf_tables_getobj(). So before free filter->table in nf_tables_dump_obj_done(), +we need to check if filter is NULL first. + +Fixes: e46abbcc05aa ("netfilter: nf_tables: Allow table names of up to 255 chars") +Signed-off-by: Hangbin Liu +Acked-by: Phil Sutter +Signed-off-by: Pablo Neira Ayuso +--- + +--- a/net/netfilter/nf_tables_api.c ++++ b/net/netfilter/nf_tables_api.c +@@ -5262,8 +5262,10 @@ static int nf_tables_dump_flowtable_done + if (!filter) + return 0; + +- kfree(filter->table); +- kfree(filter); ++ if (filter) { ++ kfree(filter->table); ++ kfree(filter); ++ } + + return 0; + } -- cgit v1.2.3