cxl/features: Clamp Get Feature output size to the remaining buffer

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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.

Source published

17 Sep 2026 16:10:59 UTC

Source modified

19 Oct 2026 09:05:12 UTC

Observed here

23 Oct 2026 15:48:27 UTC

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