CVE-2026-93798: Linux 5.8

CVE-2026-93798 affects azl3 kernel 6.6.157.1-1 on Azure Linux 3.0. CVSS 3.1 base score 3.0 (HIGH, Microsoft Security Response Center). EPSS 0.00129 (percentile 0.02548), scored 25-Oct-2026. Fixed version: 29531470b1bf1e8bd2df4941fe913106edbca615. Fixed version: 415f8665a969d3c906e4fd7c90fcbb4b357886f6. Fixed version: ee695a968aa73b1e67ccbf2133dc0e54381d32b2. Fixed version: 0bc25f0a2d1b3e0a691431c4d7aef36afcd527c5. Fixed version: ab48583aa9948205ff9a6470e23dbff74c565e24. Fixed version: 63d6b1f04cd91c825329712aa526215ffa5d11ca. Fixed version: b78fe9563e2d5ae47805f1e5dc722c91fd30e1f8. Fixed version: 5.5. Fixed version: 5.8.

Affected technology

Linux · 1dae7e0e58b484eaa43d530f211098fdeeb0f404 to before 29531470b1bf1e8bd2df4941fe913106edbca615, 1dae7e0e58b484eaa43d530f211098fdeeb0f404 to before 415f8665a969d3c906e4fd7c90fcbb4b357886f6, 1dae7e0e58b484eaa43d530f211098fdeeb0f404 to before ee695a968aa73b1e67ccbf2133dc0e54381d32b2, 1dae7e0e58b484eaa43d530f211098fdeeb0f404 to before 0bc25f0a2d1b3e0a691431c4d7aef36afcd527c5, 1dae7e0e58b484eaa43d530f211098fdeeb0f404 to before ab48583aa9948205ff9a6470e23dbff74c565e24, 1dae7e0e58b484eaa43d530f211098fdeeb0f404 to before 63d6b1f04cd91c825329712aa526215ffa5d11ca, 1dae7e0e58b484eaa43d530f211098fdeeb0f404 to before b78fe9563e2d5ae47805f1e5dc722c91fd30e1f8, ee08663380ffd5a45a1c87580fbc305e8413c235, 33823378ff2b510fd7b566f25bb18438aeb9b23b, 5.4.54 to before 5.5, 5.7.11 to before 5.8
Linux

Linux · 5.8
Linux

Component: Not specified by the source
File: fs/btrfs/relocation.c

Attack conditions (Source advisory, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 26-Oct-2026 06:07 UTC

Product: azl3 kernel 6.6.157.1-1 on Azure Linux 3.0
CCR priority: 12.0 /100 (P5)
CVSS 3.1: 3.0 /10 · CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:L · Microsoft Security Response Center
EPSS: 0.00129 · percentile 0.02548 · 2026-10-25
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-25 19:52:47.952465+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 2026-10-04 05:55:03.931280+00:00 UTC
OSV.dev · Source record · observed 2026-10-25 21:45:52.076210+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-93798.html