From: Eric Sandeen Date: Sat, 22 Dec 2007 22:03:24 +0000 (-0800) Subject: ecryptfs: fix string overflow on long cipher names X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=b88629060b03adc58639f818fe0968bf5fe81b5d;p=openwrt%2Fstaging%2Fblogic.git ecryptfs: fix string overflow on long cipher names Passing a cipher name > 32 chars on mount results in an overflow when the cipher name is printed, because the last character in the struct ecryptfs_key_tfm's cipher_name string was never zeroed. Signed-off-by: Eric Sandeen Acked-by: Michael Halcrow Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c index bbed2fd40fdc..67e8b16f7bcb 100644 --- a/fs/ecryptfs/crypto.c +++ b/fs/ecryptfs/crypto.c @@ -1847,6 +1847,7 @@ ecryptfs_add_new_key_tfm(struct ecryptfs_key_tfm **key_tfm, char *cipher_name, mutex_init(&tmp_tfm->key_tfm_mutex); strncpy(tmp_tfm->cipher_name, cipher_name, ECRYPTFS_MAX_CIPHER_NAME_SIZE); + tmp_tfm->cipher_name[ECRYPTFS_MAX_CIPHER_NAME_SIZE] = '\0'; tmp_tfm->key_size = key_size; rc = ecryptfs_process_key_cipher(&tmp_tfm->key_tfm, tmp_tfm->cipher_name,