CVE-2021-47071 Information

Description

In the Linux kernel the following vulnerability has been resolved:

uio_hv_generic: Fix a memory leak in error handling paths

If ‘vmbus_establish_gpadl()’ fails the (recv|send)_gpadl will not be updated and ‘hv_uio_cleanup()’ in the error handling path will not be able to free the corresponding buffer.

In such a case we need to free the buffer explicitly.

Reference

https://git.kernel.org/stable/c/cdd91637d4ef33e2be19a8e16e72e7d00c996d76 https://git.kernel.org/stable/c/d84b5e912212b05f6b5bde9f682046accfbe0354 https://git.kernel.org/stable/c/53486c467e356e06aa37047c984fccd64d78c827 https://git.kernel.org/stable/c/3ee098f96b8b6c1a98f7f97915f8873164e6af9d