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| author |   Yang Yingliang <yangyingliang@huawei.com> | 2022-07-13 17:40:23 +0800 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2022-07-13 13:49:03 +0100 |
| commit | 7e9984d183bb1e99e766c5c2b950ff21f7f7b6c0 (patch) | |
| tree | ee47417ae89f3b8402d25a85a2d7a5491342749d /tools/perf/scripts/python/call-graph-from-sql.py | |
| parent | spi: Fix simplification of devm_spi_register_controller (diff) | |
| download | linux-dev-7e9984d183bb1e99e766c5c2b950ff21f7f7b6c0.tar.xz linux-dev-7e9984d183bb1e99e766c5c2b950ff21f7f7b6c0.zip | |
spi: tegra20-slink: fix UAF in tegra_slink_remove()
After calling spi_unregister_master(), the refcount of master will
be decrease to 0, and it will be freed in spi_controller_release(),
the device data also will be freed, so it will lead a UAF when using
'tspi'. To fix this, get the master before unregister and put it when
finish using it.
Fixes: 26c863418221 ("spi: tegra20-slink: Don't use resource-managed spi_register helper")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220713094024.1508869-1-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-sql.py')
0 files changed, 0 insertions, 0 deletions