usb: potential integer overflow in usbg_make_tpg()
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
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: potential integer overflow in usbg_make_tpg() The variable tpgt in usbg_make_tpg() is defined as unsigned long and is assigned to tpgt->tport_tpgt, which is defined as u16. This may cause an integer overflow when tpgt is greater than USHRT_MAX (65535). I haven't tried to trigger it myself, but it is possible to trigger it by calling usbg_make_tpg() with a large value for tpgt. I modified the type of tpgt to match tpgt->tport_tpgt and adjusted the relevant code accordingly. This patch is similar to commit 59c816c1f24d ("vhost/scsi: potential memory corruption").
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 5.4.296, 5.10.240, 5.15.187, 6.1.143, 6.6.96, 6.12.36, 6.15.5, 6.16
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-68750
- 2026-10-03 Alias added: GHSA-475m-mm7r-j479
References
Other 8
- https://git.kernel.org/stable/c/0861b9cb2ff519b7c5a3b1dd52a343e18c4efb24
- https://git.kernel.org/stable/c/603a83e5fee38a950bfcfb2f36449311fa00a474
- https://git.kernel.org/stable/c/6f77e344515b5258edb3988188311464209b1c7c
- https://git.kernel.org/stable/c/6722e080b5b39ab7471386c73d0c1b39572f943c
- https://git.kernel.org/stable/c/a33f507f36d5881f602dab581ab0f8d22b49762c
- https://git.kernel.org/stable/c/358d5ba08f1609c34a054aed88c431844d09705a
- https://git.kernel.org/stable/c/620a5e1e84a3a7004270703a118d33eeb1c0f368
- https://git.kernel.org/stable/c/153874010354d050f62f8ae25cbb960c17633dc5
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Sources
- CVE-2025-68750 · CVE Program
- CVE-2025-68750 · NVD
- FIRST EPSS
- GHSA-475m-mm7r-j479 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-68750 · Red Hat security data · CC BY 4.0
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