CVE-2024-35887

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  2. Vulnerabilities (CVE)
  3. CVE-2024-35887

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

I

n the Linux kernel, the following vulnerability has been resolved: ax25: fix use-after-free bugs caused by ax25_ds_del_timer When the ax25 device is detaching, the ax25_dev_device_down() calls ax25_ds_del_timer() to cleanup the slave_timer. When the timer handler is running, the ax25_ds_del_timer() that calls del_timer() in it will return directly. As a result, the use-after-free bugs could happen, one of the scenarios is shown below: (Thread 1) | (Thread 2) | ax25_ds_timeout() ax25_dev_device_down() | ax25_ds_del_timer() | del_timer() | ax25_dev_put() //FREE | | ax25_dev-> //USE In order to mitigate bugs, when the device is detaching, use timer_shutdown_sync() to stop the timer.

References
Link Resource
https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19b Patch
https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9 Patch
https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89 Patch
https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19b Patch
https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9 Patch
https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89 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:6.9:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
History

31 Dec 2024, 18:48

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
References () https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19b - () https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19b - Patch
References () https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9 - () https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9 - Patch
References () https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89 - () https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89 - Patch
CWE CWE-416

21 Nov 2024, 09:21

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ax25: corrige errores de use after free causados por ax25_ds_del_timer Cuando el dispositivo ax25 se está desconectando, ax25_dev_device_down() llama a ax25_ds_del_timer() para limpiar el Slave_timer. Cuando el controlador del temporizador se está ejecutando, el ax25_ds_del_timer() que llama a del_timer() regresará directamente. Como resultado, podrían ocurrir errores de uso después de la liberación, uno de los escenarios se muestra a continuación: (Subproceso 1) | (Hilo 2) | ax25_ds_timeout() ax25_dev_device_down() | ax25_ds_del_timer() | del_timer() | ax25_dev_put() //GRATIS | | ax25_dev-> //USE Para mitigar errores, cuando el dispositivo se esté desconectando, use timer_shutdown_sync() para detener el temporizador.
References () https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19b - () https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19b -
References () https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9 - () https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9 -
References () https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89 - () https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89 -

19 May 2024, 09:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-19 09:15

Updated : 2024-12-31 18:48

NVD link : CVE-2024-35887

Mitre link : CVE-2024-35887

CVE.ORG link : CVE-2024-35887

JSON object : View

Products Affected

linux

CWE
CWE-416

Use After Free