CVE-2026-23122

MEDIUM

Linux Kernel 6.16-6.18.7 - Denial of Service via TSN TX Packet Buffer Overflow

Title source: llm

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.

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/88037973c8ef6032bf84e9955595f8b20bc14c21

Patch

https://git.kernel.org/stable/c/8ad1b6c1e63d25f5465b7a8aa403bdcee84b86f9

Scores

CVSS v3 5.5

EPSS 0.0002

EPSS Percentile 5.5%

Attack Vector LOCAL

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

Details

Status published

Products (9)

linux/Kernel 6.16.0 - 6.18.8linux

Linux/Linux < 6.16

Linux/Linux 0d58cdc902dace2298406b3972def04f55e3d775 - 88037973c8ef6032bf84e9955595f8b20bc14c21

Linux/Linux 0d58cdc902dace2298406b3972def04f55e3d775 - 8ad1b6c1e63d25f5465b7a8aa403bdcee84b86f9

Linux/Linux 6.16

Linux/Linux 6.18.8 - 6.18.*

Linux/Linux 6.19

linux/linux_kernel 6.19 rc1 (6 CPE variants)

linux/linux_kernel 6.16 - 6.18.8

Published Feb 14, 2026

Tracked Since Feb 18, 2026