CVE-2026-53188CWE-285

CVE-2026-53188

High · published June 25, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
1.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00114 · 1.4th percentile
Weakness
CWE-285 · Improper Authorization
Published
2026-06-25T13:16Z
Affected products (9)
ProductVersionsFixed in
linux/linux_kernel≥ 6.15, < 6.18.366.18.36
linux/linux_kernel≥ 6.19, < 7.0.137.0.13
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
References (3)
https://git.kernel.org/stable/c/4a1b1ac2744694a2ecd66a84bdb1445f4ef24bee · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/96b6e98ff12d50ed5817230c6f1188e1150d225d · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aa181287ebdcc53ee0ba5c2f8243e2d541ebc19b · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 25 JUN 08:39Z
    RDMA/core: Validate the passed in fops for ib_get_ucaps()
    cvelistv5