From b88629060b03adc58639f818fe0968bf5fe81b5d Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Sat, 22 Dec 2007 14:03:24 -0800 Subject: [PATCH] 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 --- fs/ecryptfs/crypto.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c index bbed2fd40fd..67e8b16f7bc 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, -- 2.41.1