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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.18% (FIRST EPSS).
  • Fixed version: Linux Linux 18cbce43363c9f84b90a92d57df341155eee0697, 3433680b759646efcacc64fe36aa2e51ae34b8f0, 616eee3e895b8ca0028163fcb1dce5e3e9dea322; azl3 kernel 6.6.117.1-1 on Azure Linux 3.0 6.6.119.3-1.

Low priority for now. Upgrade to Linux Linux 18cbce43363c9f84b90a92d57df341155eee0697, 3433680b759646efcacc64fe36aa2e51ae34b8f0, 616eee3e895b8ca0028163fcb1dce5e3e9dea322; azl3 kernel 6.6.117.1-1 on Azure Linux 3.0 6.6.119.3-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Dec 23, 2025
Updated
Oct 19, 2026
EPSS
0.1% · 8th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.16affected
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before 18cbce43363c9f84b90a92d57df341155eee0697affected · git
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before 3433680b759646efcacc64fe36aa2e51ae34b8f0affected · git
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before 616eee3e895b8ca0028163fcb1dce5e3e9dea322affected · git
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before f31693dc3a584c0ad3937e857b59dbc1a7ed2b87affected · git
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before 6fe9f3279f7d2518439a7962c5870c6e9ecbadcfaffected · git
    • before 3.16not affected · semver
    • 6.1.159 and later · up to and including 6.1.*not affected · semver
    • 6.6.119 and later · up to and including 6.6.*not affected · semver
    • 6.12.61 and later · up to and including 6.12.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.159-16.1.159-1
Debian:13linuxbefore 6.12.63-16.12.63-1
Debian:14linuxbefore 6.17.11-16.17.11-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-68341Dec 23, 2025 · veth: reduce XDP no_direct return section to fix race
    39Monitor
  • ← EarlierCVE-2025-68342Dec 23, 2025 · can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing data
    0Monitor
  • Later →CVE-2022-50698Dec 24, 2025 · ASoC: da7219: Fix an error handling path in da7219_register_dai_clks()
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux18cbce43363c9f84b90a92d57df341155eee0697Vendor (CNA)
Linux Linux3433680b759646efcacc64fe36aa2e51ae34b8f0Vendor (CNA)
Linux Linux616eee3e895b8ca0028163fcb1dce5e3e9dea322Vendor (CNA)
Linux Linux6fe9f3279f7d2518439a7962c5870c6e9ecbadcfVendor (CNA)
Linux Linuxf31693dc3a584c0ad3937e857b59dbc1a7ed2b87Vendor (CNA)
azl3 kernel 6.6.117.1-1 on Azure Linux 3.06.6.119.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.159-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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