linux-kernel - [PATCH AUTOSEL 6.14 625/642] pinctrl: tegra: Fix off by one in tegra_pinctrl_get

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Message-Id: <20250505221419.2672473-625-sashal@kernel.org>
Date: Mon,  5 May 2025 18:14:01 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Dan Carpenter <dan.carpenter@...aro.org>,
	Kunwu Chan <kunwu.chan@...ux.dev>,
	Linus Walleij <linus.walleij@...aro.org>,
	Sasha Levin <sashal@...nel.org>,
	thierry.reding@...il.com,
	jonathanh@...dia.com,
	pshete@...dia.com,
	peng.fan@....com,
	linux-gpio@...r.kernel.org,
	linux-tegra@...r.kernel.org
Subject: [PATCH AUTOSEL 6.14 625/642] pinctrl: tegra: Fix off by one in tegra_pinctrl_get_group()

From: Dan Carpenter <dan.carpenter@...aro.org>

[ Upstream commit 5a062c3c3b82004766bc3ece82b594d337076152 ]

This should be >= pmx->soc->ngroups instead of > to avoid an out of
bounds access.  The pmx->soc->groups[] array is allocated in
tegra_pinctrl_probe().

Fixes: c12bfa0fee65 ("pinctrl-tegra: Restore SFSEL bit when freeing pins")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
Reviewed-by: Kunwu Chan <kunwu.chan@...ux.dev>
Link: https://lore.kernel.org/82b40d9d-b437-42a9-9eb3-2328aa6877ac@stanley.mountain
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pinctrl/tegra/pinctrl-tegra.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.c b/drivers/pinctrl/tegra/pinctrl-tegra.c
index 27823e4207347..edcc78ebce456 100644
--- a/drivers/pinctrl/tegra/pinctrl-tegra.c
+++ b/drivers/pinctrl/tegra/pinctrl-tegra.c
@@ -305,7 +305,7 @@ static const struct tegra_pingroup *tegra_pinctrl_get_group(struct pinctrl_dev *
 {
 	struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
 
-	if (group_index < 0 || group_index > pmx->soc->ngroups)
+	if (group_index < 0 || group_index >= pmx->soc->ngroups)
 		return NULL;
 
 	return &pmx->soc->groups[group_index];
-- 
2.39.5