staging: media: tegra-video: fix device_node use after free
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.10