CVE-2026-31650

HIGH EPSS 1.8%
Published Apr 24, 20262mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Apr 24, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: vub300: fix use-after-free on disconnect The vub300 driver maintains an explicit reference count for the controller and its driver data and the last reference can in theory be dropped after the driver has been unbound. This specifically means that the controller allocation must not be device managed as that can lead to use-after-free. Note that the lifetime is currently also incorrectly tied the parent USB device rather than interface, which can lead to memory leaks if the driver is unbound without its device being physically disconnected (e.g. on probe deferral). Fix both issues by reverting to non-managed allocation of the controller.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
1.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥6.17.1  –  <6.18.23
linuxlinux_kernel*≥6.19  –  <6.19.13
linuxlinux_kernel6.17any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/8f4d20a710225ec7a565f6a0459862d3b1f32330
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ea7468f61be033f4e18b95f2912010ed1d175d75
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ef0448c569b37ceabdd038e9faa311e5179127b0
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/8f4d20a710225ec7a565f6a0459862d3b1f32330
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ea7468f61be033f4e18b95f2912010ed1d175d75
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ef0448c569b37ceabdd038e9faa311e5179127b0
    Patch