CVE-2026-23309

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-23309
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
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 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
History

28 May 2026, 14:24

Type Values Removed Values Added
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
CWE CWE-476
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e - () https://git.kernel.org/stable/c/13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e - Patch
References () https://git.kernel.org/stable/c/2ce8ece5a78da67834db7728edc801889a64f643 - () https://git.kernel.org/stable/c/2ce8ece5a78da67834db7728edc801889a64f643 - Patch
References () https://git.kernel.org/stable/c/42b380f97d65e76e7b310facd525f730272daf57 - () https://git.kernel.org/stable/c/42b380f97d65e76e7b310facd525f730272daf57 - Patch
References () https://git.kernel.org/stable/c/457965c13f0837a289c9164b842d0860133f6274 - () https://git.kernel.org/stable/c/457965c13f0837a289c9164b842d0860133f6274 - Patch
References () https://git.kernel.org/stable/c/477469223b2b840f436ce204333de87cb17e5d93 - () https://git.kernel.org/stable/c/477469223b2b840f436ce204333de87cb17e5d93 - Patch
References () https://git.kernel.org/stable/c/59c15b9cc453b74beb9f04c6c398717e73612dc3 - () https://git.kernel.org/stable/c/59c15b9cc453b74beb9f04c6c398717e73612dc3 - Patch
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: tracing: Añadir comprobación de puntero NULL a trigger_data_free() Si trigger_data_alloc() falla y devuelve NULL, event_hist_trigger_parse() salta a la ruta de error out_free. Aunque kfree() maneja de forma segura un puntero NULL, trigger_data_free() no lo hace. Esto causa una desreferencia de puntero NULL en trigger_data_free() al evaluar data->cmd_ops->set_filter. Corregir el problema añadiendo una comprobación de puntero NULL a trigger_data_free(). El problema fue encontrado por un agente experimental de revisión de código basado en gemini-3.1-pro mientras revisaba backports en v6.18.y.

25 Mar 2026, 11:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-25 11:16

Updated : 2026-05-28 14:24

NVD link : CVE-2026-23309

Mitre link : CVE-2026-23309

CVE.ORG link : CVE-2026-23309

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference