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authorWenwen Wang <wenwen@cs.uga.edu>2019-08-20 00:16:40 -0500
committerTyler Hicks <tyhicks@canonical.com>2019-08-20 07:02:03 +0000
commitfe2e082f5da5b4a0a92ae32978f81507ef37ec66 (patch)
treec43e27c36b574ade0667ea67cc60685cfc4a87ef /fs/ecryptfs
parent5f97cbe22b7616ead7ae267c29cad73bc1444811 (diff)
downloadlinux-fe2e082f5da5b4a0a92ae32978f81507ef37ec66.tar.bz2
ecryptfs: fix a memory leak bug in parse_tag_1_packet()
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>
Diffstat (limited to 'fs/ecryptfs')
-rw-r--r--fs/ecryptfs/keystore.c2
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)));