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| author | Gui-Dong Han <hanguidong02@gmail.com> | 2025-12-03 01:44:38 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-02-16 10:19:45 +0100 |
| commit | 1d6bd6183e723a7b256ff34bbb5b498b5f4f2ec0 (patch) | |
| tree | 0ffd8bf8fa95eae0722115e0994b0af4213606bb /include/net/aligned_data.h | |
| parent | d14e991279831673729b0f2002905bf3741df55b (diff) | |
bus: fsl-mc: fix use-after-free in driver_override_show()
commit 148891e95014b5dc5878acefa57f1940c281c431 upstream.
The driver_override_show() function reads the driver_override string
without holding the device_lock. However, driver_override_store() uses
driver_set_override(), which modifies and frees the string while holding
the device_lock.
This can result in a concurrent use-after-free if the string is freed
by the store function while being read by the show function.
Fix this by holding the device_lock around the read operation.
Fixes: 1f86a00c1159 ("bus/fsl-mc: add support for 'driver_override' in the mc-bus")
Cc: stable@vger.kernel.org
Signed-off-by: Gui-Dong Han <hanguidong02@gmail.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://lore.kernel.org/r/20251202174438.12658-1-hanguidong02@gmail.com
Signed-off-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions