On Wed, Oct 09, 2024 at 02:19:50PM +0800, libo.chen.cn@windriver.com wrote:
From: Rick Edgecombe rick.p.edgecombe@intel.com
commit 03f5a999adba ("Drivers: hv: vmbus: Leak pages if set_memory_encrypted() fails")
In CoCo VMs it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues.
VMBus code could free decrypted pages if set_memory_encrypted()/decrypted() fails. Leak the pages if this happens.
Signed-off-by: Rick Edgecombe rick.p.edgecombe@intel.com Signed-off-by: Michael Kelley mhklinux@outlook.com Reviewed-by: Kuppuswamy Sathyanarayanan sathyanarayanan.kuppuswamy@linux.intel.com Acked-by: Kirill A. Shutemov kirill.shutemov@linux.intel.com Link: https://lore.kernel.org/r/20240311161558.1310-2-mhklinux@outlook.com Signed-off-by: Wei Liu wei.liu@kernel.org Message-ID: 20240311161558.1310-2-mhklinux@outlook.com Signed-off-by: Sasha Levin sashal@kernel.org
CVE-2024-36913 Signed-off-by: Libo Chen libo.chen.cn@windriver.com
This commit is backporting 03f5a999adba to the branch linux-5.15.y to solve the CVE-2024-36913. Please merge this commit to linux-5.15.y.
As I didn't take the 6.1 patch, I can't take this one yet either :(