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CVE-2026-89648: Linux 5.7
CVE-2026-89648 affects azl3 kernel 6.6.150.1-1 on Azure Linux 3.0. CVSS 3.1 base score 7.5 (HIGH, Source advisory). EPSS 0.00609 (percentile 0.48217), scored 20-Oct-2026.
Affected technology
Linux · d4846487870897a5a149a3220c95bfd5728f9247 to before 8194d8e61ef0b49baddf660c7e88fc1c563a5e55, d4846487870897a5a149a3220c95bfd5728f9247 to before 7fc55e8e6b6b50f217b1728415578704baf4d0a2, d4846487870897a5a149a3220c95bfd5728f9247 to before c040e139f1a629b767f900bbbc3f9892c290ed85, d4846487870897a5a149a3220c95bfd5728f9247 to before f341270ac5f5077804d7837ce77b0f0df1cea29d, d4846487870897a5a149a3220c95bfd5728f9247 to before 4bd3158bd62466d57ed72a3f7bc5f205fedd6919
Linux
Linux · 5.7
Linux
Component: Not specified by the source
File: fs/ceph/mds_client.c, fs/ceph/mds_client.h, fs/ceph/super.h
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 7.5/10) 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 6.6.150.1-1 on Azure Linux 3.0
- CCR priority
- 30.2 /100 (P4)
- CVSS 3.1
- 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · Source advisory
- EPSS
- 0.00609 · percentile 0.48217 · 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-2026-89648.html