In __ubifs_node_verify_hmac(), 'hmac' is allocated through kmalloc().
However, it is not deallocated in the following execution if
ubifs_node_calc_hmac() fails, leading to a memory leak bug. To fix this
issue, free 'hmac' before returning the error.
Fixes:
49525e5eecca ("ubifs: Add helper functions for authentication support")
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Richard Weinberger <richard@nod.at>
return -ENOMEM;
err = ubifs_node_calc_hmac(c, node, len, ofs_hmac, hmac);
- if (err)
+ if (err) {
+ kfree(hmac);
return err;
+ }
err = crypto_memneq(hmac, node + ofs_hmac, hmac_len);