CVE-2023-53111

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-53111
In the Linux kernel, the following vulnerability has been resolved: loop: Fix use-after-free issues do_req_filebacked() calls blk_mq_complete_request() synchronously or asynchronously when using asynchronous I/O unless memory allocation fails. Hence, modify loop_handle_cmd() such that it does not dereference 'cmd' nor 'rq' after do_req_filebacked() finished unless we are sure that the request has not yet been completed. This patch fixes the following kernel crash: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000054 Call trace: css_put.42938+0x1c/0x1ac loop_process_work+0xc8c/0xfd4 loop_rootcg_workfn+0x24/0x34 process_one_work+0x244/0x558 worker_thread+0x400/0x8fc kthread+0x16c/0x1e0 ret_from_fork+0x10/0x20

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/407badf73ec9fb0d5744bf2ca1745c1818aa222f Patch
https://git.kernel.org/stable/c/6917395c4667cfb607ed8bf1826205a59414657c Patch
https://git.kernel.org/stable/c/9b0cb770f5d7b1ff40bea7ca385438ee94570eec Patch
https://git.kernel.org/stable/c/e3fda704903f6d1fc351412f1bc6620333959ada 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:6.3:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:*
History

10 Nov 2025, 17:53

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/407badf73ec9fb0d5744bf2ca1745c1818aa222f - () https://git.kernel.org/stable/c/407badf73ec9fb0d5744bf2ca1745c1818aa222f - Patch
References () https://git.kernel.org/stable/c/6917395c4667cfb607ed8bf1826205a59414657c - () https://git.kernel.org/stable/c/6917395c4667cfb607ed8bf1826205a59414657c - Patch
References () https://git.kernel.org/stable/c/9b0cb770f5d7b1ff40bea7ca385438ee94570eec - () https://git.kernel.org/stable/c/9b0cb770f5d7b1ff40bea7ca385438ee94570eec - Patch
References () https://git.kernel.org/stable/c/e3fda704903f6d1fc351412f1bc6620333959ada - () https://git.kernel.org/stable/c/e3fda704903f6d1fc351412f1bc6620333959ada - Patch
First Time Linux
Linux linux Kernel
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
CWE CWE-416

05 May 2025, 20:54

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: loop: Se corrigen los problemas de use after free. do_req_filebacked() llama a blk_mq_complete_request() de forma síncrona o asíncrona al usar E/S asíncrona, a menos que falle la asignación de memoria. Por lo tanto, se debe modificar loop_handle_cmd() para que no desreferencia «cmd» ni «rq» tras la finalización de do_req_filebacked(), a menos que estemos seguros de que la solicitud aún no se ha completado. Este parche corrige el siguiente fallo del kernel: No se puede manejar la desreferencia del puntero NULL del kernel en la dirección virtual 0000000000000054 Seguimiento de llamadas: css_put.42938+0x1c/0x1ac loop_process_work+0xc8c/0xfd4 loop_rootcg_workfn+0x24/0x34 process_one_work+0x244/0x558worker_thread+0x400/0x8fckthread+0x16c/0x1e0ret_from_fork+0x10/0x20

02 May 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-05-02 16:15

Updated : 2025-11-10 17:53

NVD link : CVE-2023-53111

Mitre link : CVE-2023-53111

CVE.ORG link : CVE-2023-53111

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

Use After Free