From 5e67a69811b56bc44b830ad35c8e2c813ef795fb Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Wed, 26 Feb 2025 22:49:14 +0900 Subject: [PATCH] HID: core: zero-initialize the report buffer MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ 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. Fixes: 27ce405039bf ("HID: fix data access in implement()") Reported-by: Benoît Sevens Acked-by: Benjamin Tissoires Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin CVE-2024-50302 Signed-off-by: Koichiro Den Signed-off-by: Stefan Bader --- 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 751a73ae7de7..5516edc456b9 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);