From: wangyunjian <wangyunjian@huawei.com>
To: <dev@dpdk.org>
Cc: <olivier.matz@6wind.com>, <jerry.lilijun@huawei.com>,
<xudingke@huawei.com>, Yunjian Wang <wangyunjian@huawei.com>,
<stable@dpdk.org>
Subject: [dpdk-dev] [PATCH] kvargs: fix a heap-buffer-overflow when detect list
Date: Thu, 19 Mar 2020 12:38:00 +0800 [thread overview]
Message-ID: <1584592680-14000-1-git-send-email-wangyunjian@huawei.com> (raw)
From: Yunjian Wang <wangyunjian@huawei.com>
When an input params'value is '[', leading to the 'str' over read
or heap-buffer-overflow. So we can check the 'ctx1' length to avoid
this problem.
Fixes: cc0579f2339a ("kvargs: support list value")
Cc: stable@dpdk.org
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
---
lib/librte_kvargs/rte_kvargs.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/librte_kvargs/rte_kvargs.c b/lib/librte_kvargs/rte_kvargs.c
index d39332999..a1144b90b 100644
--- a/lib/librte_kvargs/rte_kvargs.c
+++ b/lib/librte_kvargs/rte_kvargs.c
@@ -48,7 +48,8 @@ rte_kvargs_tokenize(struct rte_kvargs *kvlist, const char *params)
str = kvlist->pairs[i].value;
if (str[0] == '[') {
/* Find the end of the list. */
- while (str[strlen(str) - 1] != ']') {
+ while ((str[strlen(str) - 1] != ']') &&
+ (strlen(ctx1) > 0)) {
/* Restore the comma erased by strtok_r(). */
str[strlen(str)] = ',';
/* Parse until next comma. */
--
2.19.1
next reply other threads:[~2020-03-19 4:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-19 4:38 wangyunjian [this message]
2020-03-25 16:31 ` Olivier Matz
2020-03-26 10:01 ` [dpdk-dev] 答复: " wangyunjian
2020-03-27 8:09 ` [dpdk-dev] [PATCH v2 0/3] kvargs fixes Olivier Matz
2020-03-27 8:09 ` [dpdk-dev] [PATCH v2 1/3] tests/kvargs: fix to consider empty elements as valid Olivier Matz
2020-03-27 8:09 ` [dpdk-dev] [PATCH v2 2/3] tests/kvargs: fix check of invalid cases Olivier Matz
2020-03-27 8:09 ` [dpdk-dev] [PATCH v2 3/3] kvargs: fix a heap buffer overflow when parsing list Olivier Matz
2020-03-27 15:16 ` [dpdk-dev] [dpdk-stable] [PATCH v2 0/3] kvargs fixes David Marchand
2020-03-27 17:12 ` David Marchand
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=1584592680-14000-1-git-send-email-wangyunjian@huawei.com \
--to=wangyunjian@huawei.com \
--cc=dev@dpdk.org \
--cc=jerry.lilijun@huawei.com \
--cc=olivier.matz@6wind.com \
--cc=stable@dpdk.org \
--cc=xudingke@huawei.com \
/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;
as well as URLs for NNTP newsgroup(s).