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CVE-2026-90291: Linux 6.4
CVE-2026-90291 affects azl3 kernel 6.6.150.1-1 on Azure Linux 3.0. CVSS 3.1 base score 7.8 (HIGH, Source advisory). EPSS 0.0017 (percentile 0.06011), scored 20-Oct-2026.
Affected technology
Linux · 8660484ed1cf3261e89e0bad94c6395597e87599 to before a3205bd1f218053575589b14caf8df667f344134, 8660484ed1cf3261e89e0bad94c6395597e87599 to before 2c85e0fb528e039aa8ea1e9c2a1f64347f990541, 8660484ed1cf3261e89e0bad94c6395597e87599 to before b2709aad7599f6fd957939b60f4a8323c8f08072, 8660484ed1cf3261e89e0bad94c6395597e87599 to before cd2396fc9684d2cfd3f3c3f09c79d6d9d725b0ca, 8660484ed1cf3261e89e0bad94c6395597e87599 to before 5eecb11b543f9f417bcf0dea239ff99c6af65dbd
Linux
Linux · 6.4
Linux
Component: Not specified by the source
Function: removes, may
File: kernel/module/dups.c
Attack conditions (Source advisory, CVSS 3.1): Local · Low privileges required · No user interaction required
What an attacker can do
A local attacker with low privileges could trigger a use-after-free error. Source advisory’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high. The description does not state a further attacker outcome.
- Product
- azl3 kernel 6.6.150.1-1 on Azure Linux 3.0
- CCR priority
- 31.2 /100 (P4)
- CVSS 3.1
- 7.8 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · Source advisory
- EPSS
- 0.0017 · percentile 0.06011 · 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-2026-90291.html