diff options
| author | Danilo Krummrich <dakr@kernel.org> | 2026-03-03 12:53:21 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-02 13:25:14 +0200 |
| commit | edee7ee5a14c3b33f6d54641f5af5c5e9180992d (patch) | |
| tree | c8303769b7f0fe8884b38a8783754dfefda514e7 /sound | |
| parent | da332e7ecbb3fb7290febd41fc9aa36071558d6c (diff) | |
driver core: platform: use generic driver_override infrastructure
[ Upstream commit 2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d ]
When a driver is probed through __driver_attach(), the bus' match()
callback is called without the device lock held, thus accessing the
driver_override field without a lock, which can cause a UAF.
Fix this by using the driver-core driver_override infrastructure taking
care of proper locking internally.
Note that calling match() from __driver_attach() without the device lock
held is intentional. [1]
Link: https://lore.kernel.org/driver-core/DGRGTIRHA62X.3RY09D9SOK77P@kernel.org/ [1]
Reported-by: Gui-Dong Han <hanguidong02@gmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220789
Fixes: 3d713e0e382e ("driver core: platform: add device binding path 'driver_override'")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20260303115720.48783-5-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/samsung/i2s.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index e9964f0e010a..140907a41a70 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -1360,10 +1360,10 @@ static int i2s_create_secondary_device(struct samsung_i2s_priv *priv) if (!pdev_sec) return -ENOMEM; - pdev_sec->driver_override = kstrdup("samsung-i2s", GFP_KERNEL); - if (!pdev_sec->driver_override) { + ret = device_set_driver_override(&pdev_sec->dev, "samsung-i2s"); + if (ret) { platform_device_put(pdev_sec); - return -ENOMEM; + return ret; } ret = platform_device_add(pdev_sec); |