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CVE-2026-23300: linux kernel from 5.3 (inclusive), before 5.10.253 (exclusive), from 5.11 (inclusive), before 5.15.203 (exclusive)…
CVE-2026-23300 affects azl3 kernel 6.6.126.1-1 on Azure Linux 3.0. CVSS 3.1 base score 5.5 (MEDIUM, NVD). EPSS 0.00129 (percentile 0.02229), scored 14-Oct-2026.
Affected technology
linux kernel · from 5.3 (inclusive), before 5.10.253 (exclusive)
linux
linux kernel · from 5.11 (inclusive), before 5.15.203 (exclusive)
linux
linux kernel · from 5.16 (inclusive), before 6.1.167 (exclusive)
linux
linux kernel · from 6.2 (inclusive), before 6.6.130 (exclusive)
linux
linux kernel · from 6.7 (inclusive), before 6.12.77 (exclusive)
linux
linux kernel · from 6.13 (inclusive), before 6.18.17 (exclusive)
linux
linux kernel · from 6.19 (inclusive), before 6.19.7 (exclusive)
linux
linux kernel · 7.0 · update rc1
linux
linux kernel · 7.0 · update rc2
linux
Linux · 493ced1ac47c48bb86d9d4e8e87df8592be85a0e to before 607e68c1b7c5a30c795571be1906d716e989a644, 493ced1ac47c48bb86d9d4e8e87df8592be85a0e to before c11d7c56c2076ee9cd72004f1976fe0734df2ae9, 493ced1ac47c48bb86d9d4e8e87df8592be85a0e to before b5062fc2150614c9ea8a611c2e0cb6e047ebfa3a, 493ced1ac47c48bb86d9d4e8e87df8592be85a0e to before b299121e7453d23faddf464087dff513a495b4fc, 493ced1ac47c48bb86d9d4e8e87df8592be85a0e to before f7c9f8e3607440fe39300efbaf46cf7b5eecb23f, 493ced1ac47c48bb86d9d4e8e87df8592be85a0e to before b3b5a037d520afe3d5276e653bc0ff516bbda34c, 493ced1ac47c48bb86d9d4e8e87df8592be85a0e to before 8650db85b4259d2885d2a80fbc2317ce24194133, 493ced1ac47c48bb86d9d4e8e87df8592be85a0e to before 21ec92774d1536f71bdc90b0e3d052eff99cf093
Linux
Linux · 5.3
Linux
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.6 to before *
Siemens
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.5 to before *
Siemens
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.7 to before *
Siemens
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.6 to before *
Siemens
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.5 to before *
Siemens
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.7 to before *
Siemens
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · 0 to before *
Siemens
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.6 to before *
Siemens
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.5 to before *
Siemens
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.7 to before *
Siemens
Component: Not specified by the source
File: net/ipv6/route.c
Attack conditions (NVD, CVSS 3.1): Local · Low privileges required · No user interaction required
What an attacker can do
NVD’s CVSS 3.1 assessment (base score 5.5/10) 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.
- CWE
- CWE-476
- Product
- azl3 kernel 6.6.126.1-1 on Azure Linux 3.0
- CCR priority
- 22.0 /100 (P4)
- CVSS 3.1
- 5.5 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · NVD
- EPSS
- 0.00129 · percentile 0.02229 · 2026-10-14
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-15 09:24:28.011626+00:00 UTC
- GitHub Advisory Database · Source record · observed 2026-10-15 10:43:56.988652+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 2026-10-15 09:18:22.406219+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-23300.html