can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing data
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 2 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing data The URB received in gs_usb_receive_bulk_callback() contains a struct gs_host_frame. The length of the data after the header depends on the gs_host_frame hf::flags and the active device features (e.g. time stamping). Introduce a new function gs_usb_get_minimum_length() and check that we have at least received the required amount of data before accessing it. Only copy the data to that skb that has actually been received. [mkl: rename gs_usb_get_minimum_length() -> +gs_usb_get_minimum_rx_length()]
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.119, 6.12.61, 6.17.11, 6.18
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2025-68342
- 2026-10-03 Alias added: GHSA-2f36-x8xr-4642
- 2026-10-30 Fix available: Linux/[email protected], Linux/Linux@8376208db9283fbdfaa06c8d80735ac9954fa64a · CNA
- 2026-10-30 1 new reference · CNA
References
Other 5
- https://git.kernel.org/stable/c/8376208db9283fbdfaa06c8d80735ac9954fa64a
- https://git.kernel.org/stable/c/4ffac725154cf6a253f5e6aa0c8946232b6a0af5
- https://git.kernel.org/stable/c/ad55004a3cb5b41ef78aa6c09e7bc5a489ba652b
- https://git.kernel.org/stable/c/fb0c7c77a7ae3a2c3404b7d0173b8739a754b513
- https://git.kernel.org/stable/c/395d988f93861101ec89d0dd9e3b876ae9392a5b
More Linux vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2025-68342 · CVE Program
- CVE-2025-68342 · NVD
- FIRST EPSS
- GHSA-2f36-x8xr-4642 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-68342 · Red Hat security data · CC BY 4.0
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