From: Karel Zak <kzak@redhat.com>
Date: Tue, 31 Aug 2021 10:31:15 +0000 (+0200)
Subject: column: segmentation fault on invalid unicode input passed to -s option
X-Git-Tag: v2.38-rc1~266
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9714331843ef3a6d9c10ff1d3bc5fcf53d44d930;p=thirdparty%2Futil-linux.git

column: segmentation fault on invalid unicode input passed to -s option

The function mbs_to_wcs() returns NULL on invalid UTF.

Fixes: https://github.com/karelzak/util-linux/issues/1425
Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/text-utils/column.c b/text-utils/column.c
index 1bc90e84e3..f9878e4422 100644
--- a/text-utils/column.c
+++ b/text-utils/column.c
@@ -814,6 +814,8 @@ int main(int argc, char **argv)
 		case 's':
 			free(ctl.input_separator);
 			ctl.input_separator = mbs_to_wcs(optarg);
+			if (!ctl.input_separator)
+				err(EXIT_FAILURE, _("failed to use input separator"));
 			ctl.greedy = 0;
 			break;
 		case 'T':