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| author | Maks Mishin <maks.mishinfz@gmail.com> | 2024-01-06 22:04:23 +0300 |
|---|---|---|
| committer | Stephen Hemminger <stephen@networkplumber.org> | 2024-01-08 09:31:51 -0800 |
| commit | a193733b7a7ef1e65e1b88045c32f96ed16caeb9 (patch) | |
| tree | cc525a7b506fbd985d0df0e6b604c804472e4b14 | |
| parent | 3a882b6b4e0ee8c7cfd11176d36a98d30fc449d3 (diff) | |
| download | iproute2-a193733b7a7ef1e65e1b88045c32f96ed16caeb9.tar.gz | |
lnstat: Fix deref of null in print_json() function
Now pointer `jw` is being checked for NULL before using
in function `jsonw_start_object`.
Added exit from function when `jw==NULL`.
Found by RASU JSC
Signed-off-by: Maks Mishin <maks.mishinFZ@gmail.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
| -rw-r--r-- | misc/lnstat.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/misc/lnstat.c b/misc/lnstat.c index c3f2999cc..f802a0f35 100644 --- a/misc/lnstat.c +++ b/misc/lnstat.c @@ -112,6 +112,10 @@ static void print_json(FILE *of, const struct lnstat_file *lnstat_files, json_writer_t *jw = jsonw_new(of); int i; + if (jw == NULL) { + fprintf(stderr, "Failed to create JSON writer\n"); + exit(1); + } jsonw_start_object(jw); for (i = 0; i < fp->num; i++) { const struct lnstat_field *lf = fp->params[i].lf; |