From e368d0ad5da392d35afdff8699089346e824d7ac Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ga=C3=ABl=20PORTAY?= Date: Fri, 20 Mar 2020 16:21:58 -0400 Subject: [PATCH] lib/mangle: check for the NULL string argument MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch prevents to call the function strlen() with a NULL string argument that leads to a segmentation fault. Signed-off-by: Gaël PORTAY --- include/mangle.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/include/mangle.h b/include/mangle.h index 0a4b60c1c..08c66cb47 100644 --- a/include/mangle.h +++ b/include/mangle.h @@ -14,12 +14,14 @@ extern char *unmangle(const char *s, const char **end); static inline void unmangle_string(char *s) { - unmangle_to_buffer(s, s, strlen(s) + 1); + if (s) + unmangle_to_buffer(s, s, strlen(s) + 1); } static inline void unhexmangle_string(char *s) { - unhexmangle_to_buffer(s, s, strlen(s) + 1); + if (s) + unhexmangle_to_buffer(s, s, strlen(s) + 1); } #endif /* UTIL_LINUX_MANGLE_H */