CVE-2025-68343
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.
Affected versions
Linux kernel versions
3.16
and later are affected. Fixed in
6.1.159,
6.6.119,
6.12.61,
6.17.11,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-68343 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/18cbce43363c9f84b90a92d57df341155eee0697
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PatchKernel patch commithttps://git.kernel.org/stable/c/3433680b759646efcacc64fe36aa2e51ae34b8f0
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PatchKernel patch commithttps://git.kernel.org/stable/c/616eee3e895b8ca0028163fcb1dce5e3e9dea322
Frequently asked questions
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What is CVE-2025-68343?
CVE-2025-68343 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.16 onward and has been patched in 6.1.159, 6.6.119, 6.12.61 and others. CVE-2025-68343 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-68343?
Yes — CVE-2025-68343 has been patched. Fixed versions include 6.1.159, 6.6.119, 6.12.61 and others. If you are running Linux kernel 3.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-68343 actively exploited?
No — CVE-2025-68343 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.