diff options
| author | Lennart Poettering <lennart@poettering.net> | 2014-07-09 19:20:58 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2014-07-09 19:22:13 +0200 |
| commit | 932ad62b84165b0acf690ea34c4b8083657ae244 (patch) | |
| tree | 4c8c3c2806d9459ce69fd3c69ca8716355bd2cfc /src/sysusers/sysusers.c | |
| parent | e2a69298819b58f008be61d314f8ab95ccaec427 (diff) | |
sysusers: don't allow user names longer than UT_NAMESIZE
As pointed out by Miloslav Trmač it might be a good idea to make sure
that usernames stay with in the utmp-defined limits.
Diffstat (limited to 'src/sysusers/sysusers.c')
| -rw-r--r-- | src/sysusers/sysusers.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/sysusers/sysusers.c b/src/sysusers/sysusers.c index 1765f31a3..40a669725 100644 --- a/src/sysusers/sysusers.c +++ b/src/sysusers/sysusers.c @@ -24,6 +24,7 @@ #include <grp.h> #include <shadow.h> #include <getopt.h> +#include <utmp.h> #include "util.h" #include "hashmap.h" @@ -1095,6 +1096,9 @@ static bool valid_user_group_name(const char *u) { if ((size_t) (i-u) > (size_t) sz) return false; + if ((size_t) (i-u) > UT_NAMESIZE - 1) + return false; + return true; } |