HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT related user initiated OOB write

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logi_dj_recv_send_report() assumes that all incoming REPORT_ID_DJ_SHORT
reports are 14 Bytes (DJREPORT_SHORT_LENGTH - 1) long.  It uses that
assumption to load the associated field's 'value' array with 14 Bytes of
data.  However, if a malicious user only sends say 1 Byte of data,
'report_count' will be 1 and only 1 Byte of memory will be allocated to
the 'value' Byte array.  When we come to populate 'value[1-13]' we will
experience an OOB write.

Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

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Lee Jones 2026-03-24 14:36:44 +00:00 • committed by Jiri Kosina

parent a940aee176

commit b6a5791285

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drivers/hid/hid-logitech-dj.c

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