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Change to strncat

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ut_line is declared as a nonstring in bits/utmp.h. It might not be NUL
terminated. Limit how much it copies to the size of the array.
This commit is contained in:
Steve Grubb 2022-03-18 15:35:02 -04:00 committed by Serge Hallyn
parent b7bbf1beb8
commit 4f393a5f9f
1 changed files with 1 additions and 1 deletions
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src/logoutd.c
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@ -228,7 +228,7 @@ int main (int argc, char **argv)
tty_name[0] = '\0'; tty_name[0] = '\0';
} }
strcat (tty_name, ut->ut_line); strncat (tty_name, ut->ut_line, UT_LINESIZE);
#ifndef O_NOCTTY #ifndef O_NOCTTY
#define O_NOCTTY 0 #define O_NOCTTY 0
#endif #endif