In the Linux kernel, the following vulnerability has been resolved:
kobject: Add sanity check for kset->kobj.ktype in kset_register()
When I register a kset in the following way:
static struct kset my_kset;
kobject_set_name(&my_kset.kobj, "my_kset");
ret = kset_register(&my_kset);
A null pointer dereference exception is occurred:
[ 4453.568337] Unable to handle kernel NULL pointer dereference at \
virtual address 0000000000000028
... ...
[ 4453.810361] Call trace:
[ 4453.813062] kobject_get_ownership+0xc/0x34
[ 4453.817493] kobject_add_internal+0x98/0x274
[ 4453.822005] kset_register+0x5c/0xb4
[ 4453.825820] my_kobj_init+0x44/0x1000 [my_kset]
... ...
Because I didn't initialize my_kset.kobj.ktype.
According to the description in Documentation/core-api/kobject.rst:
- A ktype is the type of object that embeds a kobject. Every structure
that embeds a kobject needs a corresponding ktype.
So add sanity check to make sure kset->kobj.ktype is not NULL.
References
Configurations
Configuration 1 (hide)
|
History
23 Jan 2026, 02:08
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-476 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| References | () https://git.kernel.org/stable/c/039ec9db2d30032eafa365f5f89b30eca5322b05 - Patch | |
| References | () https://git.kernel.org/stable/c/1a772881bc059c596d8ca587cbd2a233edce3d3b - Patch | |
| References | () https://git.kernel.org/stable/c/48aebbe801e78a8932404c122ed0e880ccedc220 - Patch | |
| References | () https://git.kernel.org/stable/c/4d0fe8c52bb3029d83e323c961221156ab98680b - Patch | |
| References | () https://git.kernel.org/stable/c/5df5829158513134ddcaf2184d9286eda7b0bb18 - Patch | |
| References | () https://git.kernel.org/stable/c/964e025ceefdf75da46b0133d0c2790de451aeec - Patch | |
| References | () https://git.kernel.org/stable/c/f3f6bf22a4f5ba649cf26ae4670de5c7f861bdef - Patch | |
| First Time |
Linux
Linux linux Kernel |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
05 Jan 2026, 11:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
01 Oct 2025, 12:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-10-01 12:15
Updated : 2026-01-23 02:08
NVD link : CVE-2023-53480
Mitre link : CVE-2023-53480
CVE.ORG link : CVE-2023-53480
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference