CVE-2026-68293: net/mlx5: Fix MCIA register buffer overflow on 32 dword reads
CSIRTS triage
- What
- A buffer overflow occurs in the net/mlx5 driver's MCIA register handling during 32 dword reads.
- Who is affected
- Systems using Mellanox MLX5 network adapters in affected Linux kernel versions.
- Urgency
- Medium; buffer overflow with CVSS 5.5 requires mitigation but has moderate impact.
- Action
- Update to a patched Linux kernel version that fixes CVE-2026-68293.
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-2026-68293
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-2026-682930.14% 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-2026-68293 | coverage & exploitation status | NVD · CVE.org |
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