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CVE-2025-21838— usb: gadget: core: flush gadget workqueue after device removal

EPSS 0.02% · P7
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I. Basic Information for CVE-2025-21838

Vulnerability Information
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Vulnerability Title
usb: gadget: core: flush gadget workqueue after device removal
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: core: flush gadget workqueue after device removal device_del() can lead to new work being scheduled in gadget->work workqueue. This is observed, for example, with the dwc3 driver with the following call stack: device_del() gadget_unbind_driver() usb_gadget_disconnect_locked() dwc3_gadget_pullup() dwc3_gadget_soft_disconnect() usb_gadget_set_state() schedule_work(&gadget->work) Move flush_work() after device_del() to ensure the workqueue is cleaned up.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于设备移除后未刷新gadget工作队列。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 ~ e3bc1a9a67ce33a2e761e6e7b7c2afc6cb9b7266 -
LinuxLinux 3.12 -

II. Public POCs for CVE-2025-21838

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III. Intelligence Information for CVE-2025-21838

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Same Patch Batch · Linux · 2025-03-07 · 8 CVEs total

CVE-2025-21835usb: gadget: f_midi: fix MIDI Streaming descriptor lengths
CVE-2025-21836io_uring/kbuf: reallocate buf lists on upgrade
CVE-2025-21839KVM: x86: Load DR6 with guest value only before entering .vcpu_run() loop
CVE-2025-21840thermal/netlink: Prevent userspace segmentation fault by adjusting UAPI header
CVE-2025-21841cpufreq/amd-pstate: Fix cpufreq_policy ref counting
CVE-2025-21842amdkfd: properly free gang_ctx_bo when failed to init user queue
CVE-2025-21843drm/panthor: avoid garbage value in panthor_ioctl_dev_query()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-21838

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