CVE-2026-74736: net/sched: cls_bpf: reject dev-bound programs bound to a different device
CSIRTS triage
- What
- Device-bound eBPF programs can be attached to a different device than they were compiled for, bypassing device scope restrictions.
- Who is affected
- Linux systems running untrusted eBPF programs or in multi-tenant environments.
- Urgency
- Medium severity (CVSS 5.5) and not exploited; patch at next kernel update.
- Action
- Update Linux kernel to enforce device binding checks in cls_bpf program attachment.
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-2026-74736
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-2026-747360.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-74736 | coverage & exploitation status | NVD · CVE.org |
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