CVE-2026-53188

HIGH

RDMA/core: Validate the passed in fops for ib_get_ucaps()

Title source: cna

Description

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.

References (3)

Core 3

Core References

https://git.kernel.org/stable/c/96b6e98ff12d50ed5817230c6f1188e1150d225d

https://git.kernel.org/stable/c/aa181287ebdcc53ee0ba5c2f8243e2d541ebc19b

https://git.kernel.org/stable/c/4a1b1ac2744694a2ecd66a84bdb1445f4ef24bee

Scores

CVSS v3 8.8

EPSS 0.0014

EPSS Percentile 3.5%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Details

Status published

Products (12)

linux/Kernel 6.15.0 - 6.18.36linux

linux/Kernel 6.19.0 - 7.0.13linux

Linux/Linux < 6.15

Linux/Linux 6.15

Linux/Linux 6.18.36 - 6.18.*

Linux/Linux 61e51682816d395307f78ae06d640089054c28ab - 4a1b1ac2744694a2ecd66a84bdb1445f4ef24bee

Linux/Linux 61e51682816d395307f78ae06d640089054c28ab - 96b6e98ff12d50ed5817230c6f1188e1150d225d

Linux/Linux 61e51682816d395307f78ae06d640089054c28ab - aa181287ebdcc53ee0ba5c2f8243e2d541ebc19b

Linux/Linux 7.0.13 - 7.0.*

Linux/Linux 7.1

... and 2 more

Published Jun 25, 2026

Tracked Since Jun 25, 2026