CVE-2026-53188

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Validate the passed in fops for ib_get_ucaps() Sashiko pointed out it is not safe to rely only on the devt because char/block alias so if the user finds a block device with the same dev_t it can masquerade as a ucap cdev fd. Test the f_ops to only accept authentic cdevs.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.0 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://git.kernel.org/stable/c/4a1b1ac2744694a2ecd66a84bdb1445f4ef24bee	Patch
https://git.kernel.org/stable/c/96b6e98ff12d50ed5817230c6f1188e1150d225d	Patch
https://git.kernel.org/stable/c/aa181287ebdcc53ee0ba5c2f8243e2d541ebc19b	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:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc4::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc5::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc6::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc7::::::

History

19 Oct 2026, 20:19

Type	Values Removed	Values Added
CWE		CWE-285

Information

Published : 2026-06-25 09:16

Updated : 2026-10-19 20:19

NVD link : CVE-2026-53188

Mitre link : CVE-2026-53188

CVE.ORG link : CVE-2026-53188

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo CWE-285

Improper Authorization

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