CVE-2026-23309
5.5 MEDIUMIn the Linux kernel, the following vulnerability has been resolved: tracing: Add NULL pointer check to trigger_data_free() If trigger_d...
Published: 2026-03-25 · Last updated: 2026-05-28
Severity and scoring
- CVSS
- 5.5 MEDIUM
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-476
Affected products
| Vendor | Product |
|---|---|
| linux | linux_kernel |
Description
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
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-23309
- [Patch]https://git.kernel.org/stable/c/13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e
- [Patch]https://git.kernel.org/stable/c/2ce8ece5a78da67834db7728edc801889a64f643
- [Patch]https://git.kernel.org/stable/c/42b380f97d65e76e7b310facd525f730272daf57
- [Patch]https://git.kernel.org/stable/c/457965c13f0837a289c9164b842d0860133f6274
- [Patch]https://git.kernel.org/stable/c/477469223b2b840f436ce204333de87cb17e5d93
- [Patch]https://git.kernel.org/stable/c/59c15b9cc453b74beb9f04c6c398717e73612dc3
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