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CVE-2026-80991: Linux 4.2
CVE-2026-80991 affects azl3 kernel 6.6.150.1-1 on Azure Linux 3.0. CVSS 3.1 base score 7.8 (HIGH, Source advisory). EPSS 0.00163 (percentile 0.05161), scored 17-Oct-2026.
Affected technology
Linux · a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 695acb5534a9e366efb47b40c7487fc56488b09b, a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 67a82e6f886beed0de8f8da08bb767e68fba952d, a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 66b50c31419e7946e9aa325a468ad9b64c961a25, a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 1cb9663789c5b7a12fcd419fcca6d6254c398252
Linux
Linux · 4.2
Linux
Component: Not specified by the source
File: drivers/net/ethernet/renesas/ravb.h, drivers/net/ethernet/renesas/ravb_main.c, drivers/net/ethernet/renesas/ravb_ptp.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 can 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
- 0.00163 · percentile 0.05161 · 2026-10-17
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-18 12:55:59.341568+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 2026-10-19 10:33:46.008150+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-80991.html