VulnSocial

CVE-2026-31606Patch(linux / linux_kernel)

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch linux linux_kernel systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

linux CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • linux_kernel

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-04-24); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
linux
Products
linux_kernel

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-24: 1Mentions · 2026-04-26: 1Patch / Workaround · 2026-04-24: 1Technical Details · 2026-04-24: 1Technical Details · 2026-04-26: 104-2404-26
Signal classification2 categories
Patch
150.0%
General
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-04-241
Patch1
2026-04-261
General1
Full discourse2 posts
  • WindowsForum@windowsforum
    General

    🪟 CVE-2026-31606: even “small” USB HID bugs scream one thing—teardown isn’t cleanup, it’s a security boundary. Rebind + open /dev nodes is how “fixed” becomes “forgotten.” #Windows #Security https://windowsforum.com/threads/cve-2026-31606-usb-hid-gadget-fix-teardown-as-a-security-boundary.415157/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #CveRemediation #LinuxKernelSecurity #UsbGadgetHid https://t.co/TsJqH2Qprn

    Post summary

    The tweet comments on the implications of CVE‑2026‑31606, noting how rebind and "/dev" node access can undermine fixes, but it lacks detail on patches, exploitation, or PoC.

    0000032
    1.1K followersView on X
  • CVE@CVEnew
    Patch

    CVE-2026-31606 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,… https://www.cve.org/CVERecord?id=CVE-2026-31606

    Post summary

    The text reports that CVE‑2026‑31606, a kernel vulnerability, has been fixed in the Linux kernel with a patch, but provides no PoC, exploit, or evidence of active exploitation.

    00000106
    57.2K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
OSlinuxlinux_kernel---

Explore more

Back to dashboardlinux CVEslinux_kernel vulnerabilities