CVE-2026-23309In 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() j…
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 6.1.165 before 6.1.167; from 6.6.128 before 6.6.130; from 6.12.75 before 6.12.77; from 6.18.14 before 6.18.17; from 6.19.4 before 6.19.7; 7.0; 7.0 | NVD |
References
- https://git.kernel.org/stable/c/13dcd9269e225e4c4ceabdaeebe2ce4661b54c6epatch
- https://git.kernel.org/stable/c/2ce8ece5a78da67834db7728edc801889a64f643patch
- https://git.kernel.org/stable/c/42b380f97d65e76e7b310facd525f730272daf57patch
- https://git.kernel.org/stable/c/457965c13f0837a289c9164b842d0860133f6274patch
- https://git.kernel.org/stable/c/477469223b2b840f436ce204333de87cb17e5d93patch
- https://git.kernel.org/stable/c/59c15b9cc453b74beb9f04c6c398717e73612dc3patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.