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CVE-2026-23397: linux kernel 2.6.31; +5 more affected products
CVE-2026-23397 affects azl3 kernel 6.6.126.1-1 on Azure Linux 3.0. CVSS 3.1 base score 7.1 (HIGH, NVD). EPSS 0.00122 (percentile 0.01821), scored 14-Oct-2026.
Affected technology
linux kernel · from 2.6.31.1 (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 6.12.78 (exclusive)
linux
linux kernel · from 6.13 (inclusive), before 6.18.20 (exclusive)
linux
linux kernel · from 6.19 (inclusive), before 6.19.10 (exclusive)
linux
linux kernel · 2.6.31
linux
linux kernel · 7.0 · update rc1
linux
linux kernel · 7.0 · update rc2
linux
linux kernel · 7.0 · update rc3
linux
linux kernel · 7.0 · update rc4
linux
linux kernel · 7.0 · update rc5
linux
linux kernel · 7.0 · update rc6
linux
linux kernel · 7.0 · update rc7
linux
Linux · 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 to before e9cf17b91e733fec725ebcc0b3098bc5ccd505e0, 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 to before 3c11b5c2436a3a5b450612ab160e3a525b28cfb5, 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 to before aa0574182c46963c3cdb8cde46ec93aca21100d8, 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 to before 224f4678812e1a7bc8341bcb666773a0aec5ea6f, 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 to before ec8bf0571b142f29dc0b68ae2ac3952f7a464b38, 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 to before 3932620c04c2938c93c0890c225960d3d34ba355, 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 to before 4c6aa008b913e808c4f4d3cde36cb1d9bb5967c6, 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 to before dbdfaae9609629a9569362e3b8f33d0a20fd783c
Linux
Linux · 2.6.31
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/netfilter/nfnetlink_osf.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 7.1/10) rates confidentiality and availability impact as high; integrity impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.
- CWE
- CWE-125
- Product
- azl3 kernel 6.6.126.1-1 on Azure Linux 3.0
- CCR priority
- 28.4 /100 (P4)
- CVSS 3.1
- 7.1 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H · NVD
- EPSS
- 0.00122 · percentile 0.01821 · 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-2026-23397.html