CVE-2026-31606

MEDIUM EPSS 2.3%
Published Apr 24, 20262mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
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: usb: gadget: f_hid: don't call cdev_init while cdev in use When calling unbind, then bind again, cdev_init reinitialized the cdev, even though there may still be references to it. That's the case when the /dev/hidg* device is still opened. This obviously unsafe behavior like oopes. This fixes this by using cdev_alloc to put the cdev on the heap. That way, we can simply allocate a new one in hidg_bind.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥3.19  –  <6.12.83
linuxlinux_kernel*≥6.13  –  <6.18.24
linuxlinux_kernel*≥6.19  –  <6.19.14
linuxlinux_kernel*≥7.0  –  <7.0.1

References 5

  • git.kernel.org https://git.kernel.org/stable/c/5a229016ca3ac551294ec59770be9da94ec4bf63
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/75ecc46828ec377dd5692c677168ef6d64fd7123
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/81ebd43cc0d6d106ce7b6ccbf7b5e40ca7f5503d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eb6ef6185f2054a341ec70d7e2165f5381744215
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/5a229016ca3ac551294ec59770be9da94ec4bf63
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/75ecc46828ec377dd5692c677168ef6d64fd7123
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/81ebd43cc0d6d106ce7b6ccbf7b5e40ca7f5503d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eb6ef6185f2054a341ec70d7e2165f5381744215
    Patch