CVE-2022-50745

staging: media: tegra-video: fix device_node use after free

State: Published
Severity: 7.8 High
Published: Dec 24, 2025
Updated: Aug 5, 2026
Reserved: Dec 24, 2025

Description

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 * automatically gets and puts 'channel' * now the node saved in chan->of_node has refcount 0, can disappear * 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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	1ebaeb09830f36c1111b72a95420814225bd761c to before 5451efb2ca30f3c42b9efb8327ce35b62870dbd3Affected 1ebaeb09830f36c1111b72a95420814225bd761c to before ce50c612458091d926ccb05d7db11d9f93532db2Affected 1ebaeb09830f36c1111b72a95420814225bd761c to before 6512c9498fcb97e7c760e3ef86b2272f2c0f765fAffected 1ebaeb09830f36c1111b72a95420814225bd761c to before 0fd003d3c708c80350a815eaf37b8e1114b976cfAffected 1ebaeb09830f36c1111b72a95420814225bd761c to before c4d344163c3a7f90712525f931a6c016bbb35e18Affected
LinuxLinux	5.10Affected before 5.10Not affected 5.10.163 through 5.10.Not affected 5.15.87 through 5.15.Not affected 6.0.18 through 6.0.Not affected 6.1.4 through 6.1.Not affected 6.2 and laterNot affected

Product

Versions

LinuxLinux

1ebaeb09830f36c1111b72a95420814225bd761c to before 5451efb2ca30f3c42b9efb8327ce35b62870dbd3Affected
1ebaeb09830f36c1111b72a95420814225bd761c to before ce50c612458091d926ccb05d7db11d9f93532db2Affected
1ebaeb09830f36c1111b72a95420814225bd761c to before 6512c9498fcb97e7c760e3ef86b2272f2c0f765fAffected
1ebaeb09830f36c1111b72a95420814225bd761c to before 0fd003d3c708c80350a815eaf37b8e1114b976cfAffected
1ebaeb09830f36c1111b72a95420814225bd761c to before c4d344163c3a7f90712525f931a6c016bbb35e18Affected

LinuxLinux

5.10Affected
before 5.10Not affected
5.10.163 through 5.10.*Not affected
5.15.87 through 5.15.*Not affected
6.0.18 through 6.0.*Not affected
6.1.4 through 6.1.*Not affected
6.2 and laterNot affected

References

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