CVE-2026-23306

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-23306
In the Linux kernel, the following vulnerability has been resolved: scsi: pm8001: Fix use-after-free in pm8001_queue_command() Commit e29c47fe8946 ("scsi: pm8001: Simplify pm8001_task_exec()") refactors pm8001_queue_command(), however it introduces a potential cause of a double free scenario when it changes the function to return -ENODEV in case of phy down/device gone state. In this path, pm8001_queue_command() updates task status and calls task_done to indicate to upper layer that the task has been handled. However, this also frees the underlying SAS task. A -ENODEV is then returned to the caller. When libsas sas_ata_qc_issue() receives this error value, it assumes the task wasn't handled/queued by LLDD and proceeds to clean up and free the task again, resulting in a double free. Since pm8001_queue_command() handles the SAS task in this case, it should return 0 to the caller indicating that the task has been handled.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/227ff4af00abc40b95123cc27ee8079069dcd8d7 Patch
https://git.kernel.org/stable/c/38353c26db28efd984f51d426eac2396d299cca7 Patch
https://git.kernel.org/stable/c/824a7672e3540962d5c77d4c6666254d7aa6f0b3 Patch
https://git.kernel.org/stable/c/8b00427317ba7b7ec91252b034009f638d0f311b Patch
https://git.kernel.org/stable/c/c5dc39f8ae055520fd778b7fb0423f11586f15c4 Patch
https://git.kernel.org/stable/c/ebbb852ffbc952b95ddb7e3872b67b3e74c6da47 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:*:*:*:*:*:*
History

28 May 2026, 14:31

Type Values Removed Values Added
CWE CWE-416
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/227ff4af00abc40b95123cc27ee8079069dcd8d7 - () https://git.kernel.org/stable/c/227ff4af00abc40b95123cc27ee8079069dcd8d7 - Patch
References () https://git.kernel.org/stable/c/38353c26db28efd984f51d426eac2396d299cca7 - () https://git.kernel.org/stable/c/38353c26db28efd984f51d426eac2396d299cca7 - Patch
References () https://git.kernel.org/stable/c/824a7672e3540962d5c77d4c6666254d7aa6f0b3 - () https://git.kernel.org/stable/c/824a7672e3540962d5c77d4c6666254d7aa6f0b3 - Patch
References () https://git.kernel.org/stable/c/8b00427317ba7b7ec91252b034009f638d0f311b - () https://git.kernel.org/stable/c/8b00427317ba7b7ec91252b034009f638d0f311b - Patch
References () https://git.kernel.org/stable/c/c5dc39f8ae055520fd778b7fb0423f11586f15c4 - () https://git.kernel.org/stable/c/c5dc39f8ae055520fd778b7fb0423f11586f15c4 - Patch
References () https://git.kernel.org/stable/c/ebbb852ffbc952b95ddb7e3872b67b3e74c6da47 - () https://git.kernel.org/stable/c/ebbb852ffbc952b95ddb7e3872b67b3e74c6da47 - Patch

02 Apr 2026, 15:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: scsi: pm8001: Corrección de uso después de liberación en pm8001_queue_command() El commit e29c47fe8946 ('scsi: pm8001: Simplificar pm8001_task_exec()') refactoriza pm8001_queue_command(), sin embargo, introduce una causa potencial de un escenario de doble liberación cuando cambia la función para que devuelva -ENODEV en caso de estado de phy inactivo/dispositivo desaparecido. En esta ruta, pm8001_queue_command() actualiza el estado de la tarea y llama a task_done para indicar a la capa superior que la tarea ha sido gestionada. Sin embargo, esto también libera la tarea SAS subyacente. Entonces se devuelve un -ENODEV al llamador. Cuando libsas sas_ata_qc_issue() recibe este valor de error, asume que la tarea no fue gestionada/enviada a la cola por LLDD y procede a limpiar y liberar la tarea de nuevo, resultando en una doble liberación. Dado que pm8001_queue_command() gestiona la tarea SAS en este caso, debería devolver 0 al llamador indicando que la tarea ha sido gestionada.

25 Mar 2026, 11:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-25 11:16

Updated : 2026-05-28 14:31

NVD link : CVE-2026-23306

Mitre link : CVE-2026-23306

CVE.ORG link : CVE-2026-23306

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

Use After Free