CVE-2026-93800: Linux 5.13

CVE-2026-93800 affects azl3 kernel 6.6.157.1-1 on Azure Linux 3.0. CVSS 3.1 base score 4.1 (Microsoft Security Response Center). EPSS 0.00173 (percentile 0.06336), scored 24-Oct-2026. Fixed version: 5a247097c5f94b51ffc991b444d998ad6e85875f. Fixed version: 6372dd394ea907cd85a7a8063db320ec73dfaed0. Fixed version: 9f599d120b2b79d2d937c3935b7cdf2697514283. Fixed version: a01837ae174a2a968c245a30e6dd010f50eaf05d. Fixed version: 97a540d72ebcb21853d11f2a56782fe377f358e7. Fixed version: fda1b6636ff1846f00643e791099db5564b547d9. Fixed version: 83201804efa4a5168be754e1dfc9b2faee760cac. Fixed version: 5.10.271. Fixed version: 5.12.

Affected technology

Linux · f32b84d7c977e1906a4781b93b3c93090b6cd675 to before 5a247097c5f94b51ffc991b444d998ad6e85875f, 592fbcd50c99b8adf999a2a54f9245caff333139 to before 6372dd394ea907cd85a7a8063db320ec73dfaed0, 592fbcd50c99b8adf999a2a54f9245caff333139 to before 9f599d120b2b79d2d937c3935b7cdf2697514283, 592fbcd50c99b8adf999a2a54f9245caff333139 to before a01837ae174a2a968c245a30e6dd010f50eaf05d, 592fbcd50c99b8adf999a2a54f9245caff333139 to before 97a540d72ebcb21853d11f2a56782fe377f358e7, 592fbcd50c99b8adf999a2a54f9245caff333139 to before fda1b6636ff1846f00643e791099db5564b547d9, 592fbcd50c99b8adf999a2a54f9245caff333139 to before 83201804efa4a5168be754e1dfc9b2faee760cac, aa18bc1ff8a51f082d5b3b6d07693797637b4028, 4cb0aea2e250eee35ccfac5f5395cd8f3238a9e5, 5.10.36 to before 5.10.271, 5.11.20 to before 5.12, 5.12.3 to before 5.13
Linux

Linux · 5.13
Linux

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

Attack conditions (Microsoft Security Response Center, CVSS 3.1): Local · High 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 25-Oct-2026 10:20 UTC

Product: azl3 kernel 6.6.157.1-1 on Azure Linux 3.0
CCR priority: 16.4 /100 (P5)
CVSS 3.1: 4.1 /10 · CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H · Microsoft Security Response Center
EPSS: 0.00173 · percentile 0.06336 · 2026-10-24
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+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 01:59:11.642217+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-93800.html