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| author | Daiki Ueno <ueno@gnu.org> | 2022-01-11 14:07:56 +0100 |
|---|---|---|
| committer | Daiki Ueno <ueno@gnu.org> | 2022-01-12 08:14:56 +0100 |
| commit | a06be080ca4894ebb22071911bda777b45d993d9 (patch) | |
| tree | 870c195283967a1f8e6595f1a5d8fbf2b2d953eb /lib | |
| parent | 38be9ea0e52b354749a0bb1c9500ff36f55ab029 (diff) | |
| download | gnutls-a06be080ca4894ebb22071911bda777b45d993d9.tar.gz | |
x509: fix potential wrong usage of memcpy
Spotted by GCC analyzer:
common.c:552:17: warning: use of NULL 'out.data' where non-null expected [CWE-476] [-Wanalyzer-null-argument]
552 | memcpy(output_data, out.data, (size_t) out.size);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Daiki Ueno <ueno@gnu.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/x509/common.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/x509/common.c b/lib/x509/common.c index 94d206ff75..59eaee2dec 100644 --- a/lib/x509/common.c +++ b/lib/x509/common.c @@ -549,7 +549,9 @@ _gnutls_x509_export_int_named(asn1_node asn1_data, const char *name, *output_data_size = (size_t) out.size; if (output_data) { - memcpy(output_data, out.data, (size_t) out.size); + if (out.size > 0) { + memcpy(output_data, out.data, (size_t) out.size); + } if (format == GNUTLS_X509_FMT_PEM) output_data[out.size] = 0; } |