Tracker / CVE-2026-23309
CVE-2026-23309
Medium 5.5
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.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 6.1.165 → 6.1.167 |
| linux | linux_kernel · 6.12.75 → 6.12.77 |
| linux | linux_kernel · 6.18.14 → 6.18.17 |
| linux | linux_kernel · 6.19.4 → 6.19.7 |
| linux | linux_kernel · 6.6.128 → 6.6.130 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.