CVE-2026-23309
Estado: AnalizadaMedia (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.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.12%
- Percentil entre todas las CVEs puntuadas: 2
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-476
Referencias
- https://git.kernel.org/stable/c/13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e
- https://git.kernel.org/stable/c/2ce8ece5a78da67834db7728edc801889a64f643
- https://git.kernel.org/stable/c/42b380f97d65e76e7b310facd525f730272daf57
- https://git.kernel.org/stable/c/457965c13f0837a289c9164b842d0860133f6274
- https://git.kernel.org/stable/c/477469223b2b840f436ce204333de87cb17e5d93
- https://git.kernel.org/stable/c/59c15b9cc453b74beb9f04c6c398717e73612dc3
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Add NULL pointer check to trigger_data_free()\n\nIf trigger_data_alloc() fails and returns NULL, event_hist_trigger_parse()\njumps to the out_free error path. While kfree() safely handles a NULL\npointer, trigger_data_free() does not. This causes a NULL pointer\ndereference in trigger_data_free() when evaluating\ndata->cmd_ops->set_filter.\n\nFix the problem by adding a NULL pointer check to trigger_data_free().\n\nThe problem was found by an experimental code review agent based on\ngemini-3.1-pro while reviewing backports into v6.18.y."
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