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lockd: fix access beyond unterminated strings in prints 

printk format used %*s instead of %.*s, so hostname_len does not limit
the number of bytes accessed from hostname.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Amir Goldstein 2018-09-28 20:41:48 +03:00 committed by J. Bruce Fields
parent bb6ad5572c
commit 93f38b6fae
1 changed files with 1 additions and 1 deletions
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2
fs/lockd/host.c
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@ -341,7 +341,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
}; };
struct lockd_net *ln = net_generic(net, lockd_net_id); struct lockd_net *ln = net_generic(net, lockd_net_id);
dprintk("lockd: %s(host='%*s', vers=%u, proto=%s)\n", __func__, dprintk("lockd: %s(host='%.*s', vers=%u, proto=%s)\n", __func__,
(int)hostname_len, hostname, rqstp->rq_vers, (int)hostname_len, hostname, rqstp->rq_vers,
(rqstp->rq_prot == IPPROTO_UDP ? "udp" : "tcp")); (rqstp->rq_prot == IPPROTO_UDP ? "udp" : "tcp"));