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UPSTREAM: HID: core: zero-initialize the report buffer

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[ Upstream commit 177f25d1292c7e16e1199b39c85480f7f8815552 ]

Since the report buffer is used by all kinds of drivers in various ways, let's
zero-initialize it during allocation to make sure that it can't be ever used
to leak kernel memory via specially-crafted report.

Bug: 380395346
Fixes: 27ce405039 ("HID: fix data access in implement()")
Reported-by: Benoît Sevens <bsevens@google.com>
Acked-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 9d9f5c75c0)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I31f64f2745347137bbc415eb35b7fab5761867f3
This commit is contained in:
Jiri Kosina
2024-10-29 15:44:35 +01:00
committed by Treehugger Robot
parent c276c53965
commit 853ec04e2d
1 changed files with 1 additions and 1 deletions
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2
drivers/hid/hid-core.c
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@@ -1872,7 +1872,7 @@ u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
u32 len = hid_report_len(report) + 7; u32 len = hid_report_len(report) + 7;
return kmalloc(len, flags); return kzalloc(len, flags);
} }
EXPORT_SYMBOL_GPL(hid_alloc_report_buf); EXPORT_SYMBOL_GPL(hid_alloc_report_buf);