CVE-2023-53250

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-53250
In the Linux kernel, the following vulnerability has been resolved: firmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle KASAN reported a null-ptr-deref error: KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 1373 Comm: modprobe Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) RIP: 0010:dmi_sysfs_entry_release ... Call Trace: <TASK> kobject_put dmi_sysfs_register_handle (drivers/firmware/dmi-sysfs.c:540) dmi_sysfs dmi_decode_table (drivers/firmware/dmi_scan.c:133) dmi_walk (drivers/firmware/dmi_scan.c:1115) dmi_sysfs_init (drivers/firmware/dmi-sysfs.c:149) dmi_sysfs do_one_initcall (init/main.c:1296) ... Kernel panic - not syncing: Fatal exception Kernel Offset: 0x4000000 from 0xffffffff81000000 ---[ end Kernel panic - not syncing: Fatal exception ]--- It is because previous patch added kobject_put() to release the memory which will call dmi_sysfs_entry_release() and list_del(). However, list_add_tail(entry->list) is called after the error block, so the list_head is uninitialized and cannot be deleted. Move error handling to after list_add_tail to fix this.

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/18e126e97c961f7a93823795c879d7c085fe5098 Patch
https://git.kernel.org/stable/c/5d0492d1d934642bdfd2057acc1b56f4b57be465 Patch
https://git.kernel.org/stable/c/b4fe158259fb5fead52ff2b55841ec5c39492604 Patch
https://git.kernel.org/stable/c/e851996b32264e78a10863c2ac41a8689d7b9252 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

03 Dec 2025, 17:20

Type Values Removed Values Added
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-476
References () https://git.kernel.org/stable/c/18e126e97c961f7a93823795c879d7c085fe5098 - () https://git.kernel.org/stable/c/18e126e97c961f7a93823795c879d7c085fe5098 - Patch
References () https://git.kernel.org/stable/c/5d0492d1d934642bdfd2057acc1b56f4b57be465 - () https://git.kernel.org/stable/c/5d0492d1d934642bdfd2057acc1b56f4b57be465 - Patch
References () https://git.kernel.org/stable/c/b4fe158259fb5fead52ff2b55841ec5c39492604 - () https://git.kernel.org/stable/c/b4fe158259fb5fead52ff2b55841ec5c39492604 - Patch
References () https://git.kernel.org/stable/c/e851996b32264e78a10863c2ac41a8689d7b9252 - () https://git.kernel.org/stable/c/e851996b32264e78a10863c2ac41a8689d7b9252 - Patch
Information

Published : 2025-09-15 15:15

Updated : 2025-12-03 17:20

NVD link : CVE-2023-53250

Mitre link : CVE-2023-53250

CVE.ORG link : CVE-2023-53250

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference