CVE-2026-64035: igc: set tx buffer type for SMD frames

Critical severity · published Jul 19, 2026

CVE-2026-64035

igc: set tx buffer type for SMD frames

9.8

CVSS

0.4%

EPSS

On KEV

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.4% · higher than 38% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Kernel · Linux

6.16 before 6.18.34; 6.19 before 7.0.11; 7.1; 7.1; 7.1; 7.1 · source: NVD

Linux · Linux

5422570c0010bb968738f9256eb2bf83e79b4d63 before 1f83545f432d106d5fc71d3997b2d382104ebcc4; 5422570c0010bb968738f9256eb2bf83e79b4d63 before 1c8587bd025244aa52061f5ceecbf5e68a1063d9; 5422570c0010bb968738f9256eb2bf83e79b4d63 before 5acc641e590e008caaed480ed9ffae47cf7ecbdf; 6.16 · source: vendor

Affected product

Kernel

Linux

All Kernel CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-64035

CVE.org

https://www.cve.org/CVERecord?id=CVE-2026-64035

Patch

https://git.kernel.org/stable/c/1c8587bd025244aa52061f5ceecbf5e68a1063d9

Patch

https://git.kernel.org/stable/c/1f83545f432d106d5fc71d3997b2d382104ebcc4

Patch

https://git.kernel.org/stable/c/5acc641e590e008caaed480ed9ffae47cf7ecbdf