What is the CVSS score of CVE-2026-64035?

CVE-2026-64035 has a contested CVSS base score of 9.8 from a third party (e.g. CISA-ADP), while the vendor rates it Critical. vuln.today uses the vendor rating as authoritative.

Which versions of Linux are affected by CVE-2026-64035?

A CRITICAL vulnerability in Linux kernel's Intel I225/I226 network drivers can cause memory corruption or driver crashes on systems with Frame Preemption active.. A patch is available.

How to fix or mitigate CVE-2026-64035?

Within 24 hours, inventory Linux systems running Intel igc driver (I225/I226 NICs) with Frame Preemption enabled and assess Frame Preemption deployment scope. Within 7 days, apply the available kernel patch to all affected systems through standard change management. Within 30 days, complete patch rollout across the environment, validate driver stability post-deployment, and document Frame Preemption configuration for future system hardening.

Linux CVE-2026-64035

EUVD-2026-45608 CRITICAL

2026-07-19 Linux

GHSA-85cw-fhvw-f94j

Information Disclosure Linux

Critical

Disputed · 9.8 Vendor: Linux

Severity by source

Sources disagree (Medium–Critical)

Vendor (Linux) PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SUSE

CRITICAL

qualitative

Red Hat

7.0 MEDIUM

qualitative

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorVendor: Linux

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Jul 20, 2026 - 17:01 vuln.today

CVSS changed

Jul 20, 2026 - 15:22 NVD

9.8 (CRITICAL)

Patch available

Jul 19, 2026 - 17:03 EUVD

CVE Published

Jul 19, 2026 - 15:39 cve.org

CRITICAL 9.8

CVE Published

Jul 19, 2026 - 15:39 cve.org

UNKNOWN (no severity yet)

DescriptionCVE.org

In the Linux kernel, the following vulnerability has been resolved:

igc: set tx buffer type for SMD frames

Sashiko pointed out that igc_fpe_init_smd_frame() initializes igc_tx_buffer fields for an SMD skb, but does not set the buffer type: https://sashiko.dev/#/patchset/20260415025226.114115-1-kohei%40enjuk.jp

Since igc_tx_buffer entries are reused, a stale XDP or XSK type can remain and make TX completion use the wrong cleanup path.

Set the buffer type to IGC_TX_BUFFER_TYPE_SKB.

AnalysisAI

TX-completion memory mishandling in the Linux kernel's Intel igc (I225/I226 2.5GbE) driver stems from igc_fpe_init_smd_frame() failing to set the tx-buffer type on SMD (Frame Preemption) frames, so a reused igc_tx_buffer can retain a stale XDP or XSK type and be freed through the wrong cleanup path. This affects local systems running an igc NIC with Frame Preemption active, and the realistic impact is memory corruption or a driver crash rather than remote compromise. No public exploit identified at time of analysis; EPSS is very low (0.17%, 6th percentile) and it is not in CISA KEV, despite the NVD-assigned 9.8 CVSS.

Same technique Information Disclosure

View all

CVE-2019-2725 CRITICAL POC

9.8

CVE-2021-34523 CRITICAL POC

9.0

CVE-2013-2251 CRITICAL POC

9.8

CVE-2017-5638 CRITICAL POC

9.8

CVE-2025-24813 CRITICAL POC

9.8

CVE-2015-1701 HIGH POC

7.8

CVE-2017-0147 HIGH POC

7.5

CVE-2014-6324 HIGH POC

8.8

Vendor StatusVendor

SUSE

Severity: Critical

Product	Status
SUSE Linux Enterprise Desktop 15 SP7	Affected
SUSE Linux Enterprise Desktop 15 SP7	Affected
SUSE Linux Enterprise High Availability Extension 15 SP7	Affected
SUSE Linux Enterprise High Availability Extension 15 SP7	Affected
SUSE Linux Enterprise High Availability Extension 16.0	Affected

CVE-2026-64035 vulnerability details – vuln.today

Back

Linux CVE-2026-64035

Severity by source

CVSS VectorVendor: Linux

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Same technique Information Disclosure

Vendor StatusVendor

SUSE

Share

External POC / Exploit Code