From 64255d88391b8a531f0d358e22bdf12c0c79cd5d Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Sun, 10 Nov 2019 13:37:20 +0100 Subject: mkfs.ubifs: don't leak temporary buffers Signed-off-by: David Oberhollenzer --- ubifs-utils/mkfs.ubifs/fscrypt.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'ubifs-utils/mkfs.ubifs/fscrypt.c') diff --git a/ubifs-utils/mkfs.ubifs/fscrypt.c b/ubifs-utils/mkfs.ubifs/fscrypt.c index 118c11c..b75bdf7 100644 --- a/ubifs-utils/mkfs.ubifs/fscrypt.c +++ b/ubifs-utils/mkfs.ubifs/fscrypt.c @@ -106,13 +106,19 @@ int encrypt_path(void **outbuf, void *data, unsigned int data_len, memcpy(inbuf, data, data_len); crypt_key = calc_fscrypt_subkey(fctx); - if (!crypt_key) + if (!crypt_key) { + free(inbuf); + free(*outbuf); return err_msg("could not compute subkey"); + } ret = fscrypt_cipher->encrypt_fname(inbuf, cryptlen, crypt_key, *outbuf); - if (ret < 0) + if (ret < 0) { + free(inbuf); + free(*outbuf); return err_msg("could not encrypt filename"); + } free(crypt_key); free(inbuf); @@ -133,13 +139,19 @@ int encrypt_data_node(struct fscrypt_context *fctx, unsigned int block_no, memcpy(inbuf, &dn->data, length); crypt_key = calc_fscrypt_subkey(fctx); - if (!crypt_key) + if (!crypt_key) { + free(inbuf); + free(outbuf); return err_msg("could not compute subkey"); + } ret = fscrypt_cipher->encrypt_block(inbuf, pad_len, crypt_key, block_no, outbuf); if (ret != pad_len) { + free(inbuf); + free(outbuf); + free(crypt_key); return err_msg("encrypt_block returned %zi " "instead of %zi", ret, pad_len); } -- cgit v1.2.3