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openwrt/target/linux/generic/backport-4.14/334-v4.15-netfilter-nf_tables-fix-potential-NULL-ptr-deref-in-.patch
Koen Vandeputte e39414ed07 kernel: bump 4.14 to 4.14.43 for 18.06
Refreshed all patches

Dropped upstreamed patches:
522-PCI-aardvark-fix-logic-in-PCI-configuration-read-write-functions.patch
523-PCI-aardvark-set-PIO_ADDR_LS-correctly-in-advk_pcie_rd_conf.patch
525-PCI-aardvark-use-isr1-instead-of-isr0-interrupt-in-legacy-irq-mode.patch
527-PCI-aardvark-fix-PCIe-max-read-request-size-setting.patch

updated patches:
524-PCI-aardvark-set-host-and-device-to-the-same-MAX-payload-size.patch
030-USB-serial-option-fix-dwm-158-3g-modem-interface.patch

Added new ARM64 symbol: CONFIG_ARM64_ERRATUM_1024718

Compile-tested on: cns3xxx, imx6, mvebu (arm64), x86_64
Runtime-tested on: cns3xxx, imx6, x86_64

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
2018-05-24 16:04:09 +02:00

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Diff

From: Hangbin Liu <liuhangbin@gmail.com>
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 <liuhangbin@gmail.com>
Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -5269,8 +5269,10 @@ 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;
}