From 177f25d1292c7e16e1199b39c85480f7f8815552 Mon Sep 17 00:00:00 2001
From: Jiri Kosina <jkosina@suse.com>
Date: Tue, 29 Oct 2024 15:44:35 +0100
Subject: [PATCH] HID: core: zero-initialize the report buffer
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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.
Fixes: 27ce405039bf ("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>
---
drivers/hid/hid-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 30de92d0bf0f2..4aee4eae50fd3 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1875,7 +1875,7 @@ u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
u32 len = hid_report_len(report) + 7;
- return kmalloc(len, flags);
+ return kzalloc(len, flags);
}
EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
--
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