Re: [net/tls] Re: KMSAN: uninit-value in aes_encrypt (2)

[Jakub Kicinski]

On Thu, 24 Oct 2019 10:23:53 -0700, Eric Biggers wrote:
> [+TLS maintainers]
> 
> This is a net/tls bug, and probably a duplicate of:
> 
> KMSAN: uninit-value in gf128mul_4k_lle (3)
> 	https://lkml.kernel.org/linux-crypto/000000000000bf2457057b5ccda3@xxxxxxxxxx/T/#u
> 	
> KMSAN: uninit-value in aesti_encrypt
> 	https://lkml.kernel.org/linux-crypto/000000000000a97a15058c50c52e@xxxxxxxxxx/T/#u
> 
> See analysis from Alexander Potapenko here which shows that uninitialized memory
> is being passed from TLS subsystem into crypto subsystem:
> 
> 	https://lkml.kernel.org/linux-crypto/CAG_fn=UGCoDk04tL2vB981JmXgo6+-RUPmrTa3dSsK5UbZaTjA@xxxxxxxxxxxxxx/
> 
> That was a year ago, with C reproducer, and I've sent several reminders for this
> already.  What's the ETA on a fix?  Or is TLS subsystem de facto unmaintained?

Re: maintainers it may actually be that the bug is so old the people
who pay attention weren't in the MAINTAINERS yet ;) That'd explain why
Alexander didn't CC us.

Fix posted now:

net/tls: fix sk_msg trim on fallback to copy mode

ð