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authorJohan Korsnes <jkorsnes@cisco.com>2020-01-17 15:08:35 +0300
committerJiri Kosina <jkosina@suse.cz>2020-02-12 16:18:33 +0300
commit5ebdffd25098898aff1249ae2f7dbfddd76d8f8f (patch)
tree3122478a9f65b327ac83bd0cf911951719f0ca5f /include/linux/hid.h
parente433be929e63265b7412478eb7ff271467aee2d7 (diff)
downloadlinux-5ebdffd25098898aff1249ae2f7dbfddd76d8f8f.tar.xz
HID: core: fix off-by-one memset in hid_report_raw_event()
In case a report is greater than HID_MAX_BUFFER_SIZE, it is truncated, but the report-number byte is not correctly handled. This results in a off-by-one in the following memset, causing a kernel Oops and ensuing system crash. Note: With commit 8ec321e96e05 ("HID: Fix slab-out-of-bounds read in hid_field_extract") I no longer hit the kernel Oops as we instead fail "controlled" at probe if there is a report too long in the HID report-descriptor. hid_report_raw_event() is an exported symbol, so presumabely we cannot always rely on this being the case. Fixes: 966922f26c7f ("HID: fix a crash in hid_report_raw_event() function.") Signed-off-by: Johan Korsnes <jkorsnes@cisco.com> Cc: Armando Visconti <armando.visconti@st.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'include/linux/hid.h')
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