From: Stefano Brivio <sbrivio@redhat.com>
To: passt-dev@passt.top
Cc: Matej Hrica <mhrica@redhat.com>,
David Gibson <david@gibson.dropbear.id.au>
Subject: [PATCH v2 1/5] conf: Copy up to MAXDNSRCH - 1 bytes, not MAXDNSRCH
Date: Thu, 27 Jun 2024 22:46:37 +0200 [thread overview]
Message-ID: <20240627204641.4046184-2-sbrivio@redhat.com> (raw)
In-Reply-To: <20240627204641.4046184-1-sbrivio@redhat.com>
Spotted by Coverity just recently. Not that it really matters as
MAXDNSRCH always appears to be defined as 1025, while a full domain
name can have up to 253 characters: it would be a bit pointless to
have a longer search domain.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
---
conf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/conf.c b/conf.c
index e1f5422..9e47e9a 100644
--- a/conf.c
+++ b/conf.c
@@ -453,7 +453,7 @@ static void get_dns(struct ctx *c)
while (s - c->dns_search < ARRAY_SIZE(c->dns_search) - 1
/* cppcheck-suppress strtokCalled */
&& (p = strtok(NULL, " \t"))) {
- strncpy(s->n, p, sizeof(c->dns_search[0]));
+ strncpy(s->n, p, sizeof(c->dns_search[0]) - 1);
s++;
*s->n = 0;
}
--
@@ -453,7 +453,7 @@ static void get_dns(struct ctx *c)
while (s - c->dns_search < ARRAY_SIZE(c->dns_search) - 1
/* cppcheck-suppress strtokCalled */
&& (p = strtok(NULL, " \t"))) {
- strncpy(s->n, p, sizeof(c->dns_search[0]));
+ strncpy(s->n, p, sizeof(c->dns_search[0]) - 1);
s++;
*s->n = 0;
}
--
2.43.0
next prev parent reply other threads:[~2024-06-27 20:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-27 20:46 [PATCH v2 0/5] Small, assorted "hardening" fixes Stefano Brivio
2024-06-27 20:46 ` Stefano Brivio [this message]
2024-06-27 20:46 ` [PATCH v2 2/5] tcp_splice: Check return value of setsockopt() for SO_RCVLOWAT Stefano Brivio
2024-06-27 20:46 ` [PATCH v2 3/5] util, lineread, tap: Overflow checks on long signed sums and subtractions Stefano Brivio
2024-06-27 20:46 ` [PATCH v2 4/5] tap: Discard guest data on length descriptor mismatch Stefano Brivio
2024-06-27 20:46 ` [PATCH v2 5/5] conf: Use the right maximum buffer size for c->sock_path Stefano Brivio
2024-06-29 9:36 ` David Gibson
2024-07-02 20:54 ` [PATCH v2 0/5] Small, assorted "hardening" fixes Stefano Brivio
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