CVE-2026-23122
Full vulnerability record from the local CVENow database.
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.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-02-14 15:16:07.390000
Last modified
2026-11-05 22:18:03.207000
View original CVE JSON
{
"id": "CVE-2026-23122",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-02-14T15:16:07.390",
"lastModified": "2026-11-05T22:18:03.207",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nigc: Reduce TSN TX packet buffer from 7KB to 5KB per queue\n\nThe previous 7 KB per queue caused TX unit hangs under heavy\ntimestamping load. Reducing to 5 KB avoids these hangs and matches\nthe TSN recommendation in I225/I226 SW User Manual Section 7.5.4.\n\nThe 8 KB \"freed\" by this change is currently unused. This reduction\nis not expected to impact throughput, as the i226 is PCIe-limited\nfor small TSN packets rather than TX-buffer-limited."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nigc: Reducir el búfer de paquetes TX TSN de 7KB a 5KB por cola\n\nLos 7 KB anteriores por cola causaban bloqueos de la unidad TX bajo una carga pesada de marca de tiempo. La reducción a 5 KB evita estos bloqueos y coincide con la recomendación TSN en la Sección 7.5.4 del Manual de Usuario de SW I225/I226.\n\nLos 8 KB 'liberados' por este cambio actualmente no se utilizan. Esta reducción no se espera que impacte el rendimiento, ya que el i226 está limitado por PCIe para paquetes TSN pequeños en lugar de estar limitado por el búfer TX."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/net/ethernet/intel/igc/igc_defines.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"metrics": {
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"source": "[email protected]",
"type": "Primary",
"cvssData": {
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
],
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"id": "CVE-2026-23122",
"options": [
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{
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{
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"role": "CISA Coordinator",
"version": "2.0.3"
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"weaknesses": [
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"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
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"configurations": [
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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