Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-23122

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
14/02/2026
Last modified:
18/03/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> igc: Reduce TSN TX packet buffer from 7KB to 5KB per queue<br /> <br /> The previous 7 KB per queue caused TX unit hangs under heavy<br /> timestamping load. Reducing to 5 KB avoids these hangs and matches<br /> the TSN recommendation in I225/I226 SW User Manual Section 7.5.4.<br /> <br /> The 8 KB "freed" by this change is currently unused. This reduction<br /> is not expected to impact throughput, as the i226 is PCIe-limited<br /> for small TSN packets rather than TX-buffer-limited.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.16 (including) 6.18.8 (excluding)
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools