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| author | Wenwen Wang <wenwen@cs.uga.edu> | 2019-08-20 08:16:40 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-28 19:22:13 +0300 |
| commit | 7e1dbc6656ffebf48fb3b521fc4836d716d8d5cc (patch) | |
| tree | 032b185aa415db68b4b5cafecff8c38013ece7e5 /fs | |
| parent | 909149bf61da3d69a3091bc7775e046e9b73b8e3 (diff) | |
| download | linux-7e1dbc6656ffebf48fb3b521fc4836d716d8d5cc.tar.xz | |
ecryptfs: fix a memory leak bug in parse_tag_1_packet()
commit fe2e082f5da5b4a0a92ae32978f81507ef37ec66 upstream.
In parse_tag_1_packet(), if tag 1 packet contains a key larger than
ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES, no cleanup is executed, leading to a
memory leak on the allocated 'auth_tok_list_item'. To fix this issue, go to
the label 'out_free' to perform the cleanup work.
Cc: stable@vger.kernel.org
Fixes: dddfa461fc89 ("[PATCH] eCryptfs: Public key; packet management")
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ecryptfs/keystore.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c index 216fbe6a4837..4dc09638de8f 100644 --- a/fs/ecryptfs/keystore.c +++ b/fs/ecryptfs/keystore.c @@ -1304,7 +1304,7 @@ parse_tag_1_packet(struct ecryptfs_crypt_stat *crypt_stat, printk(KERN_WARNING "Tag 1 packet contains key larger " "than ECRYPTFS_MAX_ENCRYPTED_KEY_BYTES\n"); rc = -EINVAL; - goto out; + goto out_free; } memcpy((*new_auth_tok)->session_key.encrypted_key, &data[(*packet_size)], (body_size - (ECRYPTFS_SIG_SIZE + 2))); |