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CVE-2026-89788: Linux 6.6
CVE-2026-89788 affects azl3 kernel 6.6.157.1-1 on Azure Linux 3.0. CVSS 3.1 base score 9.8 (CRITICAL, Source advisory). EPSS 0.00553 (percentile 0.45141), scored 20-Oct-2026.
Affected technology
Linux · 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e to before ca3a3984bf445aaec69f6937f11e560d4b849365, 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e to before bd58a52738f7576ee5f5eb74243df13f902c8051, 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e to before 4e30fbd26e84efa2e5cbec4eb11e126ac0c79313, 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e to before b5ec6c462aab1062cf5d1e667ba7c6442f737055, dd45db4d9bbc8f122a9b4db5ce94ae29fcf03d3c, 7b58ee8d0b91359554cf219cd4f33872ea2afd66, 5.15.145 to before 5.16, 6.1.71 to before 6.2
Linux
Linux · 6.6
Linux
Component: Not specified by the source
File: fs/smb/server/mgmt/tree_connect.c, fs/smb/server/smb2pdu.c
Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
What an attacker can do
Source advisory’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and 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
- 39.3 /100 (P4)
- CVSS 3.1
- 9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · Source advisory
- EPSS
- 0.00553 · percentile 0.45141 · 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-2026-89788.html