nss buffers?

[Ulrich Drepper]

"Matthias Urlichs" <smurf@noris.de> writes:

> That "of course" causes the breakage.
> 
> Actual code, paraphrased of course, found in more than one program:
> ...
> 	pw = getpwnam("foo");
> 	if(!pw) die();
> 	sp = getspnam(pw->pw_name);
> 	if(!check_password(sp ? sp->sp_pwdp ? pw->pw_passwd)) die();
> 	chdir(pw->pw_dir); /* Garbage */
> ...

There shouldn't be any such problem.  The various getXXbyYY functions
all get there own local buffer.  See nss/getXXbyYY.c.  These are
static variables in the functions.

Please try to find out at which point the memory get overwritten.
I cannot reproduce it here.

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