From 6bd5dce9543202cfc05a4f9db645da52fbbceb3f Mon Sep 17 00:00:00 2001 From: Benno Schulenberg Date: Thu, 30 Jan 2020 20:00:17 +0100 Subject: [PATCH] tweaks: ensure that editor name and user name are NUL terminated When copying those pieces from a lock file, it is not certain that they end with a NUL character. --- src/files.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/files.c b/src/files.c index 7169d6f5..64ee9144 100644 --- a/src/files.c +++ b/src/files.c @@ -342,9 +342,11 @@ int do_lockfile(const char *filename, bool ask_the_user) } strncpy(lockprog, &lockbuf[2], 10); + lockprog[10] = '\0'; lockpid = (((unsigned char)lockbuf[27] * 256 + (unsigned char)lockbuf[26]) * 256 + (unsigned char)lockbuf[25]) * 256 + (unsigned char)lockbuf[24]; strncpy(lockuser, &lockbuf[28], 16); + lockuser[16] = '\0'; free(lockbuf); pidstring = charalloc(11);