CVE-2023-52464

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-52464
In the Linux kernel, the following vulnerability has been resolved: EDAC/thunderx: Fix possible out-of-bounds string access Enabling -Wstringop-overflow globally exposes a warning for a common bug in the usage of strncat(): drivers/edac/thunderx_edac.c: In function 'thunderx_ocx_com_threaded_isr': drivers/edac/thunderx_edac.c:1136:17: error: 'strncat' specified bound 1024 equals destination size [-Werror=stringop-overflow=] 1136 | strncat(msg, other, OCX_MESSAGE_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ... 1145 | strncat(msg, other, OCX_MESSAGE_SIZE); ... 1150 | strncat(msg, other, OCX_MESSAGE_SIZE); ... Apparently the author of this driver expected strncat() to behave the way that strlcat() does, which uses the size of the destination buffer as its third argument rather than the length of the source buffer. The result is that there is no check on the size of the allocated buffer. Change it to strlcat(). [ bp: Trim compiler output, fixup commit message. ]

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/426fae93c01dffa379225eb2bd4d3cdc42c6eec5 Patch
https://git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8 Patch
https://git.kernel.org/stable/c/5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6 Patch
https://git.kernel.org/stable/c/6aa7865ba7ff7f0ede0035180fb3b9400ceb405a Patch
https://git.kernel.org/stable/c/700cf4bead80fac994dcc43ae1ca5d86d8959b21 Patch
https://git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601 Patch
https://git.kernel.org/stable/c/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398 Patch
https://git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057 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

17 Apr 2024, 20:03

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/426fae93c01dffa379225eb2bd4d3cdc42c6eec5 - () https://git.kernel.org/stable/c/426fae93c01dffa379225eb2bd4d3cdc42c6eec5 - Patch
References () https://git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8 - () https://git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8 - Patch
References () https://git.kernel.org/stable/c/5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6 - () https://git.kernel.org/stable/c/5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6 - Patch
References () https://git.kernel.org/stable/c/6aa7865ba7ff7f0ede0035180fb3b9400ceb405a - () https://git.kernel.org/stable/c/6aa7865ba7ff7f0ede0035180fb3b9400ceb405a - Patch
References () https://git.kernel.org/stable/c/700cf4bead80fac994dcc43ae1ca5d86d8959b21 - () https://git.kernel.org/stable/c/700cf4bead80fac994dcc43ae1ca5d86d8959b21 - Patch
References () https://git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601 - () https://git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601 - Patch
References () https://git.kernel.org/stable/c/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398 - () https://git.kernel.org/stable/c/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398 - Patch
References () https://git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057 - () https://git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
First Time Linux linux Kernel
Linux
CWE CWE-119
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: EDAC/thunderx: corrige un posible acceso a cadenas fuera de los límites Al habilitar -Wstringop-overflow globalmente se expone una advertencia para un error común en el uso de strncat(): drivers/edac/ thunderx_edac.c: En la función 'thunderx_ocx_com_threaded_isr': drivers/edac/thunderx_edac.c:1136:17: error: 'strncat' el límite especificado 1024 es igual al tamaño de destino [-Werror=stringop-overflow=] 1136 | strncat(msj, otro, OCX_MESSAGE_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ... 1145 | strncat(msj, otro, OCX_MESSAGE_SIZE); ... 1150 | strncat(msj, otro, OCX_MESSAGE_SIZE); ... Aparentemente, el autor de este controlador esperaba que strncat() se comportara de la manera que lo hace strlcat(), que utiliza el tamaño del búfer de destino como tercer argumento en lugar de la longitud del búfer de origen. El resultado es que no se comprueba el tamaño del búfer asignado. Cámbielo a strlcat(). [bp: recortar la salida del compilador, mensaje de confirmación de reparación. ]

23 Feb 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-02-23 15:15

Updated : 2024-04-17 20:03

NVD link : CVE-2023-52464

Mitre link : CVE-2023-52464

CVE.ORG link : CVE-2023-52464

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer