CVE-2026-23122

MediumCVSS 5.5/10Last modified Nov 5, 2026

Description

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

igc: Reduce TSN TX packet buffer from 7KB to 5KB per queue

The previous 7 KB per queue caused TX unit hangs under heavy timestamping load. Reducing to 5 KB avoids these hangs and matches the TSN recommendation in I225/I226 SW User Manual Section 7.5.4.

The 8 KB "freed" by this change is currently unused. This reduction is not expected to impact throughput, as the i226 is PCIe-limited for small TSN packets rather than TX-buffer-limited.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= 0d58cdc902dace2298406b3972def04f55e3d775, < 88037973c8ef6032bf84e9955595f8b20bc14c21; >= 0d58cdc902dace2298406b3972def04f55e3d775, < 8ad1b6c1e63d25f5465b7a8aa403bdcee84b86f9
LinuxLinux6.16

References

Timeline

Published
Feb 14, 2026
Last modified
Nov 5, 2026
NVD status
Analyzed

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CVE-2026-23122: Medium severity, CVSS 5.5 | Vulnix