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Vulnerability DatabaseCVE-2022-50745
CVE-2022-50745:
Linux Debian vulnerability analysis and mitigation
In the Linux kernel, the following vulnerability has been resolved:
staging: media: tegra-video: fix device_node use after free
At probe time this code path is followed:
- tegra_csi_init
- tegra_csi_channels_alloc
- for_each_child_of_node(node, channel) -- iterates over channels
- automatically gets 'channel'
- tegra_csi_channel_alloc()
- saves into chan->of_node a pointer to the channel OF node
- tegra_csi_channel_alloc()
- automatically gets and puts 'channel'
- now the node saved in chan->of_node has refcount 0, can disappear
- automatically gets 'channel'
- for_each_child_of_node(node, channel) -- iterates over channels
- tegra_csi_channels_init
- iterates over channels
- tegra_csi_channel_init -- uses chan->of_node After that, chan->of_node keeps storing the node until the device is removed. of_node_get() the node and of_node_put() it during teardown to avoid any risk.
- iterates over channels
- tegra_csi_channels_alloc
Source: NVD
Related Linux Debian vulnerabilities:
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