CVE-2026-97522: Linux 6.6

CVE-2026-97522 affects azl3 kernel 6.6.157.1-1 on Azure Linux 3.0. CVSS 3.1 base score 5.5 (Microsoft Security Response Center). EPSS 0.002 (percentile 0.08899), scored 03-Oct-2026.

Affected technology

Linux · 0fa1b3783a17d75a4aa1651a18ede041ffca5750 to before ddbf9f03c1cc7d5b86eebe7c2beea0db4286d354, 0fa1b3783a17d75a4aa1651a18ede041ffca5750 to before 9781fa35d9f7a87a83115acd3a88bc9ce35b5407, 0fa1b3783a17d75a4aa1651a18ede041ffca5750 to before a0a64525f3414268ed4b1945a1dc690aa974dd4f, 0fa1b3783a17d75a4aa1651a18ede041ffca5750 to before dc054821e639a2e14f1419436612db70b6af45fc, 0fa1b3783a17d75a4aa1651a18ede041ffca5750 to before f3ef03357396d4b147d8e76c75fb612c2f264ffc
Linux

Linux · 6.6
Linux

Component: Not specified by the source
File: net/mptcp/protocol.c

Attack conditions (Microsoft Security Response Center, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

Microsoft Security Response Center’s CVSS 3.1 assessment rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 19-Oct-2026 10:37 UTC

Product: azl3 kernel 6.6.157.1-1 on Azure Linux 3.0
CCR priority: 22.1 /100 (P4)
CVSS 3.1: 5.5 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U · Microsoft Security Response Center
EPSS: 0.002 · percentile 0.09167 · 2026-10-17
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-18 12:55:59.341568+00:00 UTC
GitHub Advisory Database · Source record · observed 2026-10-04 06:01:24.332572+00:00 UTC
Microsoft MSRC Security Update Guide (CVRF) · Source record · observed 2026-10-04 07:08:49.022374+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-19 10:33:46.008150+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-97522.html