Linux kernel bug in a widely deployed Intel igc network driver; kernel memory corruption risk across many Linux systems, requiring org-wide attention.
CVE-2026-64035
Linux igc driver buffer-type bug can corrupt kernel memory on TX completion
Is CVE-2026-64035 being exploited?
Not confirmed. CVE-2026-64035 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.44% probability of exploitation in the next 30 days.
How severe is CVE-2026-64035?
CVE-2026-64035 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-64035?
Yes. A fix has been recorded for CVE-2026-64035. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-64035 affect?
CVE-2026-64035 affects Linux kernel (igc network driver), Systems using Intel igc NICs. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-64035?
Apply upstream kernel/driver updates or vendor patches immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
TX buffer-type mismatch may cause kernel memory corruption/use-after-free leading to crash, DoS, or potential privilege escalation via crafted network traffic.
Immediate action required
- affected>= 5422570c0010bb968738f9256eb2bf83e79b4d63 and < 1f83545f432d106d5fc71d3997b2d382104ebcc4
- affected>= 5422570c0010bb968738f9256eb2bf83e79b4d63 and < 1c8587bd025244aa52061f5ceecbf5e68a1063d9
- affected>= 5422570c0010bb968738f9256eb2bf83e79b4d63 and < 5acc641e590e008caaed480ed9ffae47cf7ecbdf
- affected6.16
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.