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domenico
2025-06-24 16:03:39 +02:00
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package/kernel/mac80211/patches/brcm/388-v5.4-brcmfmac-replace-strncpy-by-strscpy.patch Normal file
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@@ -0,0 +1,36 @@
From 5f42b382ead278c1f6c3854765c97eb20491aa2a Mon Sep 17 00:00:00 2001
From: Xulin Sun <xulin.sun@windriver.com>
Date: Fri, 23 Aug 2019 15:47:08 +0800
Subject: [PATCH] brcmfmac: replace strncpy() by strscpy()
The strncpy() may truncate the copied string,
replace it by the safer strscpy().
To avoid below compile warning with gcc 8.2:
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:In function 'brcmf_vndr_ie':
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:4227:2:
warning: 'strncpy' output truncated before terminating nul copying 3 bytes from a string of the same length [-Wstringop-truncation]
strncpy(iebuf, add_del_cmd, VNDR_IE_CMD_LEN - 1);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -4236,9 +4236,7 @@ next:
static u32
brcmf_vndr_ie(u8 *iebuf, s32 pktflag, u8 *ie_ptr, u32 ie_len, s8 *add_del_cmd)
{
-
- strncpy(iebuf, add_del_cmd, VNDR_IE_CMD_LEN - 1);
- iebuf[VNDR_IE_CMD_LEN - 1] = '\0';
+ strscpy(iebuf, add_del_cmd, VNDR_IE_CMD_LEN);
put_unaligned_le32(1, &iebuf[VNDR_IE_COUNT_OFFSET]);