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Vulnerability DatabaseCVE-2026-23309
CVE-2026-23309:
Linux Debian vulnerability analysis and mitigation
In the Linux kernel, the following vulnerability has been resolved:
tracing: Add NULL pointer check to trigger_data_free()
If trigger_data_alloc() fails and returns NULL, event_hist_trigger_parse() jumps to the out_free error path. While kfree() safely handles a NULL pointer, trigger_data_free() does not. This causes a NULL pointer dereference in trigger_data_free() when evaluating data->cmd_ops->set_filter.
Fix the problem by adding a NULL pointer check to trigger_data_free().
The problem was found by an experimental code review agent based on gemini-3.1-pro while reviewing backports into v6.18.y.
Source: NVD
Related Linux Debian vulnerabilities:
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