CVE-2026-90397: Linux 6.3

CVE-2026-90397 affects azl3 kernel 6.6.150.1-1 on Azure Linux 3.0. CVSS 3.1 base score 5.5 (Microsoft Security Response Center). EPSS 0.002 (percentile 0.09249), scored 20-Oct-2026.

Affected technology

Linux · 6bf32599223634294cdc6efb359ffaab1d68073c to before c9c1e3da0a206270e5df470ca1c82de52190d68c, 6bf32599223634294cdc6efb359ffaab1d68073c to before b451f38cb7f5bca78484362347f039c08c94de95, 6bf32599223634294cdc6efb359ffaab1d68073c to before 1d753df5899ec356272d08bc4718e82844e4bdf0, 6bf32599223634294cdc6efb359ffaab1d68073c to before f312ef5026678f14caf1378c5f7fffdf667f9c81, 6bf32599223634294cdc6efb359ffaab1d68073c to before 966d23c7e68ea32679275a7e3d2383181002c868
Linux

Linux · 6.3
Linux

Component: Not specified by the source
File: drivers/firmware/qcom/qcom_scm-smc.c, drivers/firmware/qcom/qcom_scm.c, drivers/firmware/qcom/qcom_scm.h

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 21-Oct-2026 16:29 UTC

Product: azl3 kernel 6.6.150.1-1 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 0.09249 · 2026-10-20
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-20 16:56:29.772392+00:00 UTC
GitHub Advisory Database · Source record · observed 2026-10-21 16:14:50.830645+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 2026-10-21 16:09:05.633125+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-90397.html