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| author |   Ulrich Drepper <drepper@redhat.com> | 2009-04-23 19:15:11 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2009-04-23 19:15:11 +0000 |
| commit | c7e74e5968929264fca40424f979653115643f5d (patch) | |
| tree | 3b5aa4b73d4b44a2081214d77b1ef71f377630e1 /shadow | |
| parent | * shadow/Makefile (tests): Add tst-shadow. (diff) | |
| download | glibc-c7e74e5968929264fca40424f979653115643f5d.tar.gz glibc-c7e74e5968929264fca40424f979653115643f5d.tar.bz2 glibc-c7e74e5968929264fca40424f979653115643f5d.zip | |
* shadow/sgetspent_r.c (__sgetspent_r): Recognize too small buffers.
Diffstat (limited to 'shadow')
| -rw-r--r-- | shadow/sgetspent_r.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/shadow/sgetspent_r.c b/shadow/sgetspent_r.c index 2ed350a1ad..5599ee4ec8 100644 --- a/shadow/sgetspent_r.c +++ b/shadow/sgetspent_r.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1997, 1998, 2005 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997, 1998, 2005, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -91,8 +91,12 @@ int __sgetspent_r (const char *string, struct spwd *resbuf, char *buffer, size_t buflen, struct spwd **result) { - int parse_result = parse_line (strncpy (buffer, string, buflen), - resbuf, NULL, 0, &errno); + buffer[buflen - 1] = '\0'; + char *sp = strncpy (buffer, string, buflen); + if (buffer[buflen - 1] != '\0') + return ERANGE; + + int parse_result = parse_line (sp, resbuf, NULL, 0, &errno); *result = parse_result > 0 ? resbuf : NULL; return *result == NULL ? errno : 0; |