CVE-2026-23122None▾ Sunlit

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

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 thes…

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score3/ 100 · Minimal

impact 2.8 · likelihood 0 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Feb 14, 2026

Updated

Nov 5, 2026

CVSS

—

Vendor

Linux

Product

Linux

CWE

—

Depth score

3 · Minimal

EPSS

0.12% · p2

Platforms

—

Source

CVEORG

Vector

—

CISA SSVC

decided 2026-11-05

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Nov 5.

0.1% → 0.1%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 264 days

Feb 14, 2026Published
Disclosed via CVEORG
Nov 5, 2026Record revised
Last analysed / modified upstream
Nov 5, 2026EPSS first tracked
0.1%

Linux #cve.org

Affected

Linux >= 0d58cdc902dace2298406b3972def04f55e3d775 < 88037973c8ef6032bf84e9955595f8b20bc14c21
Linux >= 0d58cdc902dace2298406b3972def04f55e3d775 < 8ad1b6c1e63d25f5465b7a8aa403bdcee84b86f9
Linux 6.16

Full technical detail▾

Overview

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.

Affected

Linux >= 0d58cdc902dace2298406b3972def04f55e3d775 < 88037973c8ef6032bf84e9955595f8b20bc14c21
Linux >= 0d58cdc902dace2298406b3972def04f55e3d775 < 8ad1b6c1e63d25f5465b7a8aa403bdcee84b86f9
Linux 6.16

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#cve.org

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

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score3/ 100 · Minimal

impact 2.8 · likelihood 0 · exploitation 0

Overview

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.