In the Linux kernel, the following vulnerability has been resolved:
cxl/features: Clamp Get Feature output size to the remaining buffer
cxl_get_feature() reads a feature in a loop but passes a fixed size_out
as the output capacity every iteration. On the last partial iteration
the buffer has less room left, so a device that returns more than asked
can overflow feat_out.
Use the per-iter size data_to_rd_size, which already tracks the
remaining room, as the output capacity.
References 3
https://git.kernel.org/stable/c/2aeb21fe557ef154f0cdf4f9745ebd8d5b31ca83
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b8abbd5c2928fd839dab702244cc57b228ab43aa
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ca95b15a0760e7724e61addbdd61050be13b6406
416baaa9-dc9f-4396-8d5f-8c081fb06d67