CVE-2022-50745
Use-After-Free Vulnerability in Linux Tegra Video Driver
Publication date: 2025-12-24
Last updated on: 2025-12-24
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| nvidia | tegra_video | * |
| linux | linux_kernel | * |
| linux | kernel | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
The vulnerability is fixed by ensuring proper reference counting of device tree nodes in the tegra-video driver. To mitigate this vulnerability, update your Linux kernel to a version that includes the fix for the 'staging: media: tegra-video: fix device_node use after free' issue. This fix involves calling of_node_get() and of_node_put() appropriately during device initialization and teardown to avoid use-after-free conditions.
Can you explain this vulnerability to me?
This vulnerability is a use-after-free issue in the Linux kernel's tegra-video media staging driver. During device initialization, a pointer to a device tree node (of_node) is saved without properly increasing its reference count, which can lead to the node being freed while still in use. This can cause the driver to access freed memory, potentially leading to instability or crashes. The fix involves properly managing the reference count by calling of_node_get() when saving the node and of_node_put() during teardown to prevent the node from being freed prematurely.
How can this vulnerability impact me? :
This vulnerability can lead to use-after-free conditions in the tegra-video driver, which may cause system instability, crashes, or unexpected behavior when the device is initialized or removed. In some cases, such memory errors could be exploited to cause denial of service or potentially escalate privileges, depending on the system context.