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From fdf4c18b1f2c17eddc871d4a593240a59dd0682f Mon Sep 17 00:00:00 2001
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From: Adrian Reber <areber@redhat.com>
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Date: Wed, 14 Apr 2021 09:21:50 +0200
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Subject: [PATCH 1/3] libnet_port_list.c: fix gcc -fanalyzer warning
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This fixes:
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libnet_port_list.c:99:8: warning: leak of ‘_8’ [CWE-401] [-Wanalyzer-malloc-leak]
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99 | if (!all_lists)
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| ^
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‘libnet_plist_chain_new’: events 1-3
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| 48 | if (l == NULL)
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| | ^
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| | |
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| | (1) following ‘false’ branch (when ‘l_70(D)’ is non-NULL)...
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|......
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| 53 | if (token_list == NULL)
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| | ~~ ~
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| | | |
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| | | (3) following ‘false’ branch (when ‘token_list_71(D)’ is non-NULL)...
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| | (2) ...to here
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‘libnet_plist_chain_new’: event 4
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|cc1:
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| (4): ...to here
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‘libnet_plist_chain_new’: events 5-9
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| 83 | *plist = malloc(sizeof (libnet_plist_t));
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| | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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| | |
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| | (5) allocated here
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| 84 |
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| 85 | if (!(*plist))
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| | ~
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| | |
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| | (6) assuming ‘*plist_74(D)’ is non-NULL
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| | (7) following ‘false’ branch...
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|......
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| 93 | tmp = *plist;
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| | ~~~
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| | |
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| | (8) ...to here
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|......
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| 99 | if (!all_lists)
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| | ~
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| | |
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| | (9) ‘_8’ leaks here; was allocated at (5)
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Signed-off-by: Adrian Reber <areber@redhat.com>
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---
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src/libnet_port_list.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/src/libnet_port_list.c b/src/libnet_port_list.c
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index 942a856..a99867c 100644
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--- a/src/libnet_port_list.c
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+++ b/src/libnet_port_list.c
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@@ -101,6 +101,7 @@ libnet_plist_chain_new(libnet_t *l, libnet_plist_t **plist, char *token_list)
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all_lists = all_lists_tmp;
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snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
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"libnet_build_plist_chain: realloc %s", strerror(errno));
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+ free(tmp);
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*plist = NULL;
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return(-1);
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}
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From 60d71f03f26d349b4bf069983f625128ddcfdba8 Mon Sep 17 00:00:00 2001
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From: Adrian Reber <areber@redhat.com>
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Date: Wed, 14 Apr 2021 09:41:27 +0200
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Subject: [PATCH 2/3] =?UTF-8?q?libnet=5Fpblock.c:=20fix=20warning=20"unuse?=
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=?UTF-8?q?d=20variable=20=E2=80=98c=E2=80=99"?=
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Signed-off-by: Adrian Reber <areber@redhat.com>
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---
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src/libnet_pblock.c | 1 -
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1 file changed, 1 deletion(-)
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diff --git a/src/libnet_pblock.c b/src/libnet_pblock.c
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index fa46d35..e3eb184 100644
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--- a/src/libnet_pblock.c
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+++ b/src/libnet_pblock.c
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@@ -489,7 +489,6 @@ libnet_pblock_coalesce(libnet_t *l, uint8_t **packet, uint32_t *size)
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{
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if (q->flags & LIBNET_PBLOCK_DO_CHECKSUM)
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{
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- uint32_t c;
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uint8_t* end = *packet + l->aligner + l->total_size;
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uint8_t* beg = *packet + n;
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int ip_offset = calculate_ip_offset(l, q);
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From 5085aebbe93b81eb93bfec5e33c04286f779ceda Mon Sep 17 00:00:00 2001
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From: Adrian Reber <areber@redhat.com>
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Date: Wed, 14 Apr 2021 10:13:23 +0200
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Subject: [PATCH 3/3] libnet_cq.c: fix 'dereference of possibly-NULL'
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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libnet_cq.c:139:18: warning: dereference of possibly-NULL ‘new_18’ [CWE-690] [-Wanalyzer-possible-null-dereference]
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139 | new->context = l;
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| ~~~~~~~~~~~~~^~~
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‘libnet_cq_add.part.0’: events 1-6
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| 71 | libnet_cq_add(libnet_t *l, char *label)
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| | ^~~~~~~~~~~~~
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| | |
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| | (1) entry to ‘libnet_cq_add.part.0’
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|......
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| 89 | if (label == NULL)
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| | ~
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| | |
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| | (2) following ‘false’ branch (when ‘label_1(D)’ is non-NULL)...
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|......
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| 97 | if (l_cq == NULL)
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| | ~~ ~
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| | | |
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| | | (4) following ‘false’ branch...
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| | (3) ...to here
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|......
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| 124 | if (libnet_cq_dup_check(l, label))
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| | ~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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| | | |
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| | | (6) calling ‘libnet_cq_dup_check’ from ‘libnet_cq_add.part.0’
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| | (5) ...to here
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+--> ‘libnet_cq_dup_check’: events 7-13
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| 269 | libnet_cq_dup_check(libnet_t *l, char *label)
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| | ^~~~~~~~~~~~~~~~~~~
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| | |
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| | (7) entry to ‘libnet_cq_dup_check’
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|......
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| 273 | for (p = l_cq; p; p = p->next)
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| | ~ ~~~~~~~~~~~
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| | | |
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| | | (13) ...to here
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| | (8) following ‘true’ branch (when ‘p_6’ is non-NULL)...
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| 274 | {
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| 275 | if (p->context == l)
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| | ~~ ~
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| | | |
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| | | (10) following ‘false’ branch...
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| | (9) ...to here
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|......
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| 281 | if (strncmp(p->context->label, label, LIBNET_LABEL_SIZE) == 0)
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| | ~~ ~
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| | | |
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| | | (12) following ‘false’ branch...
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| | (11) ...to here
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<------+
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‘libnet_cq_add.part.0’: events 14-20
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| 124 | if (libnet_cq_dup_check(l, label))
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| | ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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| | ||
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| | |(14) returning to ‘libnet_cq_add.part.0’ from ‘libnet_cq_dup_check’
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| | (15) following ‘false’ branch...
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|......
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| 130 | new = (libnet_cq_t *)malloc(sizeof (libnet_cq_t));
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| | ~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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| | | |
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| | | (17) this call could return NULL
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| | (16) ...to here
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| 131 | if (l_cq == NULL)
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| | ~
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| | |
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| | (18) following ‘false’ branch...
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|......
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| 139 | new->context = l;
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| | ~~~~~~~~~~~~~~~~
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| | | |
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| | | (20) ‘new_18’ could be NULL: unchecked value from (17)
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| | (19) ...to here
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Signed-off-by: Adrian Reber <areber@redhat.com>
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---
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src/libnet_cq.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/libnet_cq.c b/src/libnet_cq.c
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index 2234cbc..b3c5677 100644
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--- a/src/libnet_cq.c
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+++ b/src/libnet_cq.c
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@@ -128,7 +128,7 @@ libnet_cq_add(libnet_t *l, char *label)
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}
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new = (libnet_cq_t *)malloc(sizeof (libnet_cq_t));
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- if (l_cq == NULL)
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+ if (new == NULL)
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{
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snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
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"%s(): can't malloc new context queue: %s",
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