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CVE-2026-89987: Linux 4.8
CVE-2026-89987 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 0.00206 (percentile 0.10114), scored 20-Oct-2026.
Affected technology
Linux · b5072380eb619786990cd9eab3ade05d09ccd89e to before 6e904f9e8cb0e39f60e1cdbea679f89346a563c2, b5072380eb619786990cd9eab3ade05d09ccd89e to before fd720d3906877b3d2118cd480027e4bc6648f0c5, b5072380eb619786990cd9eab3ade05d09ccd89e to before effe3cc6d4fdd407457eb30f7b0ef094393f0d64, b5072380eb619786990cd9eab3ade05d09ccd89e to before 9435cddf1378d149d826bd7bd1448a44bf96868d, b5072380eb619786990cd9eab3ade05d09ccd89e to before fe6cf984939d8e12cb33a99673c8d026c5135e68
Linux
Linux · 4.8
Linux
Component: Not specified by the source
File: mm/huge_memory.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.
- 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
- 0.00206 · percentile 0.10114 · 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-2026-89987.html