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CVE-2022-50568— usb: gadget: f_hid: fix f_hidg lifetime vs cdev

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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f_hidg生命周期与cdev不匹配，可能导致释放后重用。

AI Predicted 7.8 Difficulty: Easy EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 71adf118946957839a13aa4d1094183e05c6c094< 1cd7f156f6389918f760687fbbf133c86da93162 affected
71adf118946957839a13aa4d1094183e05c6c094< c78c87c4e389b62f8892af7f59857447aa6d9797 affected
71adf118946957839a13aa4d1094183e05c6c094< 1b6a53e447ec3d81623610c8c7ec5082b47dfdce affected
71adf118946957839a13aa4d1094183e05c6c094< d3136b79705c2e3bba9c76adc5628af0215d798e affected
71adf118946957839a13aa4d1094183e05c6c094< 9e4b85d815b14bd4db2deea2a54264a23de8b896 affected
71adf118946957839a13aa4d1094183e05c6c094< 9e08b7f5fa00e9d550851352bd0d1ba74ccffef2 affected
71adf118946957839a13aa4d1094183e05c6c094< 89ff3dfac604614287ad5aad9370c3f984ea3f4b affected
2.6.35 affected
… +8 more rows
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I. Basic Information for CVE-2022-50568

Vulnerability Information
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Vulnerability Title
usb: gadget: f_hid: fix f_hidg lifetime vs cdev
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_hid: fix f_hidg lifetime vs cdev The embedded struct cdev does not have its lifetime correctly tied to the enclosing struct f_hidg, so there is a use-after-free if /dev/hidgN is held open while the gadget is deleted. This can readily be replicated with libusbgx's example programs (for conciseness - operating directly via configfs is equivalent): gadget-hid exec 3<> /dev/hidg0 gadget-vid-pid-remove exec 3<&- Pull the existing device up in to struct f_hidg and make use of the cdev_device_{add,del}() helpers. This changes the lifetime of the device object to match struct f_hidg, but note that it is still added and deleted at the same time.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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f_hidg生命周期与cdev不匹配，可能导致释放后重用。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 71adf118946957839a13aa4d1094183e05c6c094 ~ 1cd7f156f6389918f760687fbbf133c86da93162 -
Linux Linux 2.6.35 -

II. Public POCs for CVE-2022-50568

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III. Intelligence Information for CVE-2022-50568

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Patches & Fixes for CVE-2022-50568 (7)

Same Patch Batch · Linux · 2025-10-22 · 67 CVEs total

CVE-2023-53711 8.2 HIGH NFS: Fix a potential data corruption
CVE-2023-53705 8.2 HIGH ipv6: Fix out-of-bounds access in ipv6_find_tlv()
CVE-2023-53698 7.8 HIGH xsk: fix refcount underflow in error path
CVE-2023-53692 7.8 HIGH ext4: fix use-after-free read in ext4_find_extent for bigalloc + inline
CVE-2023-53718 7.8 HIGH ring-buffer: Do not swap cpu_buffer during resize process
CVE-2022-50569 7.8 HIGH xfrm: Update ipcomp_scratches with NULL when freed
CVE-2022-50570 7.8 HIGH platform/chrome: fix memory corruption in ioctl
CVE-2022-50567 7.8 HIGH fs: jfs: fix shift-out-of-bounds in dbAllocAG
CVE-2023-53695 7.8 HIGH udf: Detect system inodes linked into directory hierarchy
CVE-2023-53707 7.8 HIGH drm/amdgpu: Fix integer overflow in amdgpu_cs_pass1
CVE-2022-50581 7.8 HIGH hfs: fix OOB Read in __hfs_brec_find
CVE-2023-53729 7.8 HIGH soc: qcom: qmi_encdec: Restrict string length in decode
CVE-2023-53713 7.8 HIGH arm64: sme: Use STR P to clear FFR context field in streaming SVE mode
CVE-2023-53726 7.1 HIGH arm64: csum: Fix OoB access in IP checksum code for negative lengths
CVE-2023-53704 clk: imx: clk-imx8mp: improve error handling in imx8mp_clocks_probe()
CVE-2023-53706 mm/vmemmap/devdax: fix kernel crash when probing devdax devices
CVE-2023-53714 drm/stm: ltdc: fix late dereference check
CVE-2023-53708 ACPI: x86: s2idle: Catch multiple ACPI_TYPE_PACKAGE objects
CVE-2023-53712 ARM: 9317/1: kexec: Make smp stop calls asynchronous
CVE-2023-53719 serial: arc_uart: fix of_iomap leak in `arc_serial_probe`

Showing top 20 of 67 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50568

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