CVE-2026-64035CWE-665CWE-909

CVE-2026-64035

Critical · published July 19, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
37.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00442 · 37.4th percentile
Weaknesses
CWE-665 · Improper Initialization; CWE-909 · Missing Initialization of Resource
Published
2026-07-19T20:17Z
Affected products (6)
ProductVersionsFixed in
linux/linux_kernel≥ 6.16, < 6.18.346.18.34
linux/linux_kernel≥ 6.19, < 7.0.117.0.11
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
References (3)
https://git.kernel.org/stable/c/1c8587bd025244aa52061f5ceecbf5e68a1063d9 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1f83545f432d106d5fc71d3997b2d382104ebcc4 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5acc641e590e008caaed480ed9ffae47cf7ecbdf · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 19 JUL 15:39Z
    igc: set tx buffer type for SMD frames
    cvelistv5