lz4 hc buffer overflow

From: Kent Overstreet
Date: Sun Mar 10 2024 - 20:00:42 EST


reference https://github.com/koverstreet/bcachefs/issues/658

It looks like something is off with the bounds checking in LZ4 HC; I
haven't dug too deep yet. Never saw this with regular LZ4.

Anyone know anything? Are we missing a fix from the userspace library?