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CVE-2025-68343— can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header

EPSS 0.03% · P10
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I. Basic Information for CVE-2025-68343

Vulnerability Information
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Vulnerability Title
can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header The driver expects to receive a struct gs_host_frame in gs_usb_receive_bulk_callback(). Use struct_group to describe the header of the struct gs_host_frame and check that we have at least received the header before accessing any members of it. To resubmit the URB, do not dereference the pointer chain "dev->parent->hf_size_rx" but use "parent->hf_size_rx" instead. Since "urb->context" contains "parent", it is always defined, while "dev" is not defined if the URB it too short.
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gs_usb_receive_bulk_callback中未检查头部长度，可能导致越界读取。
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 d08e973a77d128b25e01a08c34d89593fdf222da ~ 18cbce43363c9f84b90a92d57df341155eee0697 -
LinuxLinux 3.16 -

II. Public POCs for CVE-2025-68343

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III. Intelligence Information for CVE-2025-68343

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Same Patch Batch · Linux · 2025-12-23 · 6 CVEs total

CVE-2025-68342can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing data
CVE-2025-68341veth: reduce XDP no_direct return section to fix race
CVE-2025-68340team: Move team device type change at the end of team_port_add
CVE-2025-68339atm/fore200e: Fix possible data race in fore200e_open()
CVE-2025-68338net: dsa: microchip: Don't free uninitialized ksz_irq

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-68343

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