diff options
Diffstat (limited to 'src/lib/krb4/recvauth.c')
| -rw-r--r-- | src/lib/krb4/recvauth.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/lib/krb4/recvauth.c b/src/lib/krb4/recvauth.c index e62e3f9..2a66656 100644 --- a/src/lib/krb4/recvauth.c +++ b/src/lib/krb4/recvauth.c @@ -188,9 +188,12 @@ krb_recvauth(options, fd, ticket, service, instance, faddr, laddr, kdata, if (i < KRB_SENDAUTH_VLEN) { /* since we already got the space, and part of the ticket, we read fewer bytes to get the rest of the ticket */ + int len_to_read = tkt_len - KRB_SENDAUTH_VLEN + 1 + i; + if (len_to_read <= 0) + return KFAILURE; if (krb_net_read(fd, (char *)(tmp_buf+KRB_SENDAUTH_VLEN), - (int) (tkt_len - KRB_SENDAUTH_VLEN + 1 + i)) - != (int)(tkt_len - KRB_SENDAUTH_VLEN + 1 + i)) + len_to_read) + != len_to_read) return(errno); } else { if (krb_net_read(fd, (char *)(tmp_buf+i), (int)tkt_len) != |