CVE-2026-68088: usb: gadget: function: rndis: add length check to response query
CSIRTS triage
- What
- Missing length validation in USB RNDIS gadget function response query handler enables buffer overflow.
- Who is affected
- Systems running affected Linux kernel versions with USB RNDIS gadget support enabled.
- Urgency
- High severity (CVSS 7.1) buffer overflow risk; kernel patch required to prevent exploitation.
- Action
- Update to a patched Linux kernel version that includes length checking in the RNDIS response handler.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68088
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-680880.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-68088 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
Recent advisories for usb
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- unknownCVE-2026-74501: In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: fix use-a…nvd · 2026-08-15
- unknownCVE-2026-74500: In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: fix stack…nvd · 2026-08-15
- unknownCVE-2026-74499: In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: fix OOB w…nvd · 2026-08-15
- unknownCVE-2026-74498: In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix DMA b…nvd · 2026-08-15
- highCVE-2026-74497: In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Clamp fra…nvd · 2026-08-15
- unknownCVE-2026-74460: In the Linux kernel, the following vulnerability has been resolved: can: ems_usb: validate CPC…nvd · 2026-08-15
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