CVE-2023-52449

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-52449
In the Linux kernel, the following vulnerability has been resolved: mtd: Fix gluebi NULL pointer dereference caused by ftl notifier If both ftl.ko and gluebi.ko are loaded, the notifier of ftl triggers NULL pointer dereference when trying to access ‘gluebi->desc’ in gluebi_read(). ubi_gluebi_init ubi_register_volume_notifier ubi_enumerate_volumes ubi_notify_all gluebi_notify nb->notifier_call() gluebi_create mtd_device_register mtd_device_parse_register add_mtd_device blktrans_notify_add not->add() ftl_add_mtd tr->add_mtd() scan_header mtd_read mtd_read_oob mtd_read_oob_std gluebi_read mtd->read() gluebi->desc - NULL Detailed reproduction information available at the Link [1], In the normal case, obtain gluebi->desc in the gluebi_get_device(), and access gluebi->desc in the gluebi_read(). However, gluebi_get_device() is not executed in advance in the ftl_add_mtd() process, which leads to NULL pointer dereference. The solution for the gluebi module is to run jffs2 on the UBI volume without considering working with ftl or mtdblock [2]. Therefore, this problem can be avoided by preventing gluebi from creating the mtdblock device after creating mtd partition of the type MTD_UBIVOLUME.

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/001a3f59d8c914ef8273461d4bf495df384cc5f8 Patch
https://git.kernel.org/stable/c/1bf4fe14e97cda621522eb2f28b0a4e87c5b0745 Patch
https://git.kernel.org/stable/c/5389407bba1eab1266c6d83e226fb0840cb98dd5 Patch
https://git.kernel.org/stable/c/a43bdc376deab5fff1ceb93dca55bcab8dbdc1d6 Patch
https://git.kernel.org/stable/c/aeba358bcc8ffddf9b4a9bd0e5ec9eb338d46022 Patch
https://git.kernel.org/stable/c/b36aaa64d58aaa2f2cbc8275e89bae76a2b6c3dc Patch
https://git.kernel.org/stable/c/cfd7c9d260dc0a3baaea05a122a19ab91e193c65 Patch
https://git.kernel.org/stable/c/d8ac2537763b54d278b80b2b080e1652523c7d4c 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

18 Mar 2024, 18:38

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mtd: corrige la desreferencia del puntero NULL de Gluebi causada por el notificador ftl. Si se cargan tanto ftl.ko como pegamentobi.ko, el notificador de ftl activa la desreferencia del puntero NULL al intentar acceder a 'gluebi-. >desc' en pegamentobi_read(). ubi_gluebi_init ubi_register_volume_notifier ubi_enumerate_volumes ubi_notify_all pegamentobi_notify nb->notifier_call() pegamentobi_create mtd_device_register mtd_device_parse_register add_mtd_device blktrans_notify_add not->add() ftl_add_mtd tr->add_mtd() scan_header mtd_read mtd_read_oob mtd_read_oob_std pegamentobi_read mtd->read() pegamentobi->desc - NULL Información detallada de reproducción disponible en el enlace [1], en el caso normal, obtenga pegamentobi->desc en pegamentobi_get_device() y acceda a pegamentobi->desc en pegamentobi_read(). Sin embargo, pegamentobi_get_device() no se ejecuta de antemano en el proceso ftl_add_mtd(), lo que conduce a la desreferencia del puntero NULL. La solución para el módulo pegamentobi es ejecutar jffs2 en el volumen UBI sin considerar trabajar con ftl o mtdblock [2]. Por lo tanto, este problema se puede evitar evitando que pegamentobi cree el dispositivo mtdblock después de crear la partición mtd del tipo MTD_UBIVOLUME.
CWE CWE-476
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/001a3f59d8c914ef8273461d4bf495df384cc5f8 - () https://git.kernel.org/stable/c/001a3f59d8c914ef8273461d4bf495df384cc5f8 - Patch
References () https://git.kernel.org/stable/c/1bf4fe14e97cda621522eb2f28b0a4e87c5b0745 - () https://git.kernel.org/stable/c/1bf4fe14e97cda621522eb2f28b0a4e87c5b0745 - Patch
References () https://git.kernel.org/stable/c/5389407bba1eab1266c6d83e226fb0840cb98dd5 - () https://git.kernel.org/stable/c/5389407bba1eab1266c6d83e226fb0840cb98dd5 - Patch
References () https://git.kernel.org/stable/c/a43bdc376deab5fff1ceb93dca55bcab8dbdc1d6 - () https://git.kernel.org/stable/c/a43bdc376deab5fff1ceb93dca55bcab8dbdc1d6 - Patch
References () https://git.kernel.org/stable/c/aeba358bcc8ffddf9b4a9bd0e5ec9eb338d46022 - () https://git.kernel.org/stable/c/aeba358bcc8ffddf9b4a9bd0e5ec9eb338d46022 - Patch
References () https://git.kernel.org/stable/c/b36aaa64d58aaa2f2cbc8275e89bae76a2b6c3dc - () https://git.kernel.org/stable/c/b36aaa64d58aaa2f2cbc8275e89bae76a2b6c3dc - Patch
References () https://git.kernel.org/stable/c/cfd7c9d260dc0a3baaea05a122a19ab91e193c65 - () https://git.kernel.org/stable/c/cfd7c9d260dc0a3baaea05a122a19ab91e193c65 - Patch
References () https://git.kernel.org/stable/c/d8ac2537763b54d278b80b2b080e1652523c7d4c - () https://git.kernel.org/stable/c/d8ac2537763b54d278b80b2b080e1652523c7d4c - Patch

22 Feb 2024, 17:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-02-22 17:15

Updated : 2024-03-18 18:38

NVD link : CVE-2023-52449

Mitre link : CVE-2023-52449

CVE.ORG link : CVE-2023-52449

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference