From: Henry Martin <bsdhenrymartin@gmail.com> stable inclusion from stable-v6.6.94 commit 3c1adc2f8c732ea09e8c4bce5941fec019c6205d category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICJT6U CVE: CVE-2025-38160 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... ---------------------------------- [ Upstream commit 73c46d9a93d071ca69858dea3f569111b03e549e ] devm_kasprintf() returns NULL when memory allocation fails. Currently, raspberrypi_clk_register() does not check for this case, which results in a NULL pointer dereference. Add NULL check after devm_kasprintf() to prevent this issue. Fixes: 93d2725affd6 ("clk: bcm: rpi: Discover the firmware clocks") Signed-off-by: Henry Martin <bsdhenrymartin@gmail.com> Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20250402020513.42628-1-bsdhenrymartin@gmail.com Reviewed-by: Stefan Wahren <wahrenst@gmx.net> Signed-off-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Wang Zhaolong <wangzhaolong@huaweicloud.com> --- drivers/clk/bcm/clk-raspberrypi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/bcm/clk-raspberrypi.c b/drivers/clk/bcm/clk-raspberrypi.c index 4d411408e4af..cc4ca336ac13 100644 --- a/drivers/clk/bcm/clk-raspberrypi.c +++ b/drivers/clk/bcm/clk-raspberrypi.c @@ -269,10 +269,12 @@ static struct clk_hw *raspberrypi_clk_register(struct raspberrypi_clk *rpi, data->variant = variant; init.name = devm_kasprintf(rpi->dev, GFP_KERNEL, "fw-clk-%s", rpi_firmware_clk_names[id]); + if (!init.name) + return ERR_PTR(-ENOMEM); init.ops = &raspberrypi_firmware_clk_ops; init.flags = CLK_GET_RATE_NOCACHE; data->hw.init = &init; -- 2.34.3