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| author | Dmitry V. Levin <ldv@altlinux.org> | 2014-01-22 02:34:03 +0000 |
|---|---|---|
| committer | Dmitry V. Levin <ldv@altlinux.org> | 2014-01-22 22:54:12 +0000 |
| commit | f760a6dc5853869d21051c7ed6015117941c1155 (patch) | |
| tree | ab7f6587a4e9f8c6fa28a57eced604c51f32ac4f /libpam_misc | |
| parent | 6b7558c8f88851ab954174e62d3b1e46cd2664b1 (diff) | |
| download | pam-f760a6dc5853869d21051c7ed6015117941c1155.tar.gz pam-f760a6dc5853869d21051c7ed6015117941c1155.tar.bz2 pam-f760a6dc5853869d21051c7ed6015117941c1155.zip | |
libpam_misc: fix an inconsistency in handling memory allocation errors
When misc_conv fails to allocate memory for pam_response array, it
returns PAM_CONV_ERR. However, when read_string fails to allocate
memory for a response string, it loses the response string and silently
ignores the error, with net result as if EOF has been read.
* libpam_misc/misc_conv.c (read_string): Use strdup instead of x_strdup,
the latter is of no benefit in this case.
Do not ignore potential memory allocation errors returned by strdup,
forward them to misc_conv.
Diffstat (limited to 'libpam_misc')
| -rw-r--r-- | libpam_misc/misc_conv.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libpam_misc/misc_conv.c b/libpam_misc/misc_conv.c index 3f74eeae..be53f343 100644 --- a/libpam_misc/misc_conv.c +++ b/libpam_misc/misc_conv.c @@ -210,8 +210,12 @@ static int read_string(int echo, const char *prompt, char **retstr) } line[nc] = '\0'; } - *retstr = x_strdup(line); + *retstr = strdup(line); _pam_overwrite(line); + if (!*retstr) { + D(("no memory for response string")); + nc = -1; + } goto cleanexit; /* return malloc()ed string */ |