From: David Hunt <david.hunt@intel.com>
To: dev@dpdk.org
Cc: david.hunt@intel.com, stable@dpdk.org
Subject: [dpdk-dev] [PATCH v1] examples/vm_power_manager: fix string null termination
Date: Fri, 26 Apr 2019 09:43:37 +0100 [thread overview]
Message-ID: <20190426084337.3921-1-david.hunt@intel.com> (raw)
Message-ID: <20190426084337.kgXufpEaJpZPf3mZsGdjBegnuDmtDQgte3wHKXFeRBI@z> (raw)
coverity complains about a null-termination after a read,
so we terminate conditionally on whether idx is within
the buffer or at the end of the buffer.
Coverity issue: 337680
Fixes: a63504a90f ("examples/power: add JSON string handling")
CC: stable@dpdk.org
Signed-off-by: David Hunt <david.hunt@intel.com>
---
examples/vm_power_manager/channel_monitor.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/examples/vm_power_manager/channel_monitor.c b/examples/vm_power_manager/channel_monitor.c
index 971e4f2bc..711722fef 100644
--- a/examples/vm_power_manager/channel_monitor.c
+++ b/examples/vm_power_manager/channel_monitor.c
@@ -808,6 +808,7 @@ read_json_packet(struct channel_info *chan_info)
int indent = 0;
do {
n_bytes = read(chan_info->fd, &json_data[idx], 1);
+ json_data[idx + (idx < MAX_JSON_STRING_LEN - 1)] = '\0';
if (n_bytes == 0)
break;
if (json_data[idx] == '{')
--
2.17.1
next reply other threads:[~2019-04-26 8:43 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-26 8:43 David Hunt [this message]
2019-04-26 8:43 ` David Hunt
2019-04-26 10:33 ` Burakov, Anatoly
2019-04-26 10:33 ` Burakov, Anatoly
2019-04-26 11:16 ` Hunt, David
2019-04-26 11:16 ` Hunt, David
2019-04-26 11:24 ` [dpdk-dev] [PATCH v2] " David Hunt
2019-04-26 11:24 ` David Hunt
2019-04-26 11:56 ` Burakov, Anatoly
2019-04-26 11:56 ` Burakov, Anatoly
2019-04-26 12:31 ` Bruce Richardson
2019-04-26 12:31 ` Bruce Richardson
2019-04-26 12:47 ` Burakov, Anatoly
2019-04-26 12:47 ` Burakov, Anatoly
2019-04-26 14:04 ` [dpdk-dev] [PATCH v3] " David Hunt
2019-04-26 14:04 ` David Hunt
2019-04-26 14:10 ` Burakov, Anatoly
2019-04-26 14:10 ` Burakov, Anatoly
2019-05-02 23:43 ` Thomas Monjalon
2019-05-02 23:43 ` Thomas Monjalon
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