Commit 91e8c6e6 authored by Günther Noack's avatar Günther Noack Committed by Benjamin Tissoires
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HID: magicmouse: avoid memory leak in magicmouse_report_fixup() 



The magicmouse_report_fixup() function was returning a
newly kmemdup()-allocated buffer, but never freeing it.

The caller of report_fixup() does not take ownership of the returned
pointer, but it *is* permitted to return a sub-portion of the input
rdesc, whose lifetime is managed by the caller.

Assisted-by: Gemini-CLI:Google Gemini 3
Signed-off-by: default avatarGünther Noack <gnoack@google.com>
Signed-off-by: default avatarBenjamin Tissoires <bentiss@kernel.org>
parent 239c1511

drivers/hid/hid-magicmouse.c

+1 −3
Original line number Diff line number Diff line
@@ -994,9 +994,7 @@ static const __u8 *magicmouse_report_fixup(struct hid_device *hdev, __u8 *rdesc, 
		hid_info(hdev,

			 "fixing up magicmouse battery report descriptor\n");

		*rsize = *rsize - 1;

		rdesc = kmemdup(rdesc + 1, *rsize, GFP_KERNEL);

		if (!rdesc)

			return NULL;

		rdesc = rdesc + 1;



		rdesc[0] = 0x05;

		rdesc[1] = 0x01;