From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Pablo Neira Ayuso <pablo@netfilter.org>
Subject: [PATCH 4.19 14/20] netfilter: nf_tables: initialize registers in nft_do_chain()
Date: Fri, 25 Mar 2022 16:04:52 +0100 [thread overview]
Message-ID: <20220325150417.423549616@linuxfoundation.org> (raw)
In-Reply-To: <20220325150417.010265747@linuxfoundation.org>
From: Pablo Neira Ayuso <pablo@netfilter.org>
commit 4c905f6740a365464e91467aa50916555b28213d upstream.
Initialize registers to avoid stack leak into userspace.
Fixes: 96518518cc41 ("netfilter: add nftables")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/netfilter/nf_tables_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/netfilter/nf_tables_core.c
+++ b/net/netfilter/nf_tables_core.c
@@ -144,7 +144,7 @@ nft_do_chain(struct nft_pktinfo *pkt, vo
struct nft_rule *const *rules;
const struct nft_rule *rule;
const struct nft_expr *expr, *last;
- struct nft_regs regs;
+ struct nft_regs regs = {};
unsigned int stackptr = 0;
struct nft_jumpstack jumpstack[NFT_JUMP_STACK_SIZE];
bool genbit = READ_ONCE(net->nft.gencursor);
next prev parent reply other threads:[~2022-03-25 15:08 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-25 15:04 [PATCH 4.19 00/20] 4.19.237-rc1 review Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 01/20] nfc: st21nfca: Fix potential buffer overflows in EVT_TRANSACTION Greg Kroah-Hartman
2022-06-02 16:12 ` Pavel Machek
2022-06-02 16:30 ` [External] : " Denis Efremov
2022-06-02 19:03 ` Denis Efremov
2022-03-25 15:04 ` [PATCH 4.19 02/20] net: ipv6: fix skb_over_panic in __ip6_append_data Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 03/20] esp: Fix possible buffer overflow in ESP transformation Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 04/20] staging: fbtft: fb_st7789v: reset display before initialization Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 05/20] thermal: int340x: fix memory leak in int3400_notify() Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 06/20] llc: fix netdevice reference leaks in llc_ui_bind() Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 07/20] ASoC: sti: Fix deadlock via snd_pcm_stop_xrun() call Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 08/20] ALSA: oss: Fix PCM OSS buffer allocation overflow Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 09/20] ALSA: pcm: Add stream lock during PCM reset ioctl operations Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 10/20] ALSA: usb-audio: Add mute TLV for playback volumes on RODE NT-USB Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 11/20] ALSA: cmipci: Restore aux vol on suspend/resume Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 12/20] ALSA: pci: fix reading of swapped values from pcmreg in AC97 codec Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 13/20] drivers: net: xgene: Fix regression in CRC stripping Greg Kroah-Hartman
2022-03-25 15:04 ` Greg Kroah-Hartman [this message]
2022-03-25 15:04 ` [PATCH 4.19 15/20] ACPI / x86: Work around broken XSDT on Advantech DAC-BJ01 board Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 16/20] ACPI: battery: Add device HID and quirk for Microsoft Surface Go 3 Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 17/20] ACPI: video: Force backlight native for Clevo NL5xRU and NL5xNU Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 18/20] crypto: qat - disable registration of algorithms Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 19/20] mac80211: fix potential double free on mesh join Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.19 20/20] nds32: fix access_ok() checks in get/put_user Greg Kroah-Hartman
2022-03-25 18:40 ` [PATCH 4.19 00/20] 4.19.237-rc1 review Pavel Machek
2022-03-25 23:25 ` Shuah Khan
2022-03-26 3:46 ` Samuel Zou
2022-03-26 14:04 ` Sudip Mukherjee
2022-03-26 14:24 ` Naresh Kamboju
2022-03-27 0:50 ` Guenter Roeck
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220325150417.423549616@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=pablo@netfilter.org \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox