CVE-2022-50481

In the Linux kernel, the following vulnerability has been resolved: cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter() If device_register() fails in cxl_register_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

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/170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8	Patch
https://git.kernel.org/stable/c/1ae581696b7a799afa39a664c4b721569643f58a	Patch
https://git.kernel.org/stable/c/60b2ed21a65f3f5318666ccd765c3507991370cf	Patch
https://git.kernel.org/stable/c/61c80d1c3833e196256fb060382db94f24d3d9a7	Patch
https://git.kernel.org/stable/c/96fba6fb95bdede80583c262ac185da09661f264	Patch
https://git.kernel.org/stable/c/ab44c182353be101c3be9465e1d15d42130c53c4	Patch
https://git.kernel.org/stable/c/b32559ee4e6667c5c3daf4ec5454c277d1f255d2	Patch
https://git.kernel.org/stable/c/d775a1da5a52b4f4bb02f2707ba420d1bec48dbb	Patch
https://git.kernel.org/stable/c/e5021bbf11b024cc65ea1e84c377df484183be4b	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::::::::

History

No history.

Information

Published : 2025-10-04 16:15

Updated : 2026-01-23 20:12

NVD link : CVE-2022-50481

Mitre link : CVE-2022-50481

CVE.ORG link : CVE-2022-50481

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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