CVE-2026-46142

net: libwx: fix VF illegal register access

At a glance

Severity: Not available
EPSS: EPSS 0.13 % · percentile 2 (2026-10-27)
State: PUBLISHED
Published: 2026-05-28
Updated: 2026-06-14
Assigner: Linux
NVD status: Undergoing Analysis

Description

In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix VF illegal register access Register WX_CFG_PORT_ST is a PF restricted register. When a VF is initialized, attempting to read this register triggers an illegal register access, which lead to a system hang. When the device is VF, the bus function ID can be obtained directly from the PCI_FUNC(pdev->devfn).

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)

European references

ENISA EUVD · EUVD-2026-32769
GCVE · GCVE-0-2026-46142

CERT-FR advisories

CERTFR-2026-AVI-1252 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
CERTFR-2026-AVI-1229 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
CERTFR-2026-AVI-1162 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
CERTFR-2026-AVI-1066 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
CERTFR-2026-AVI-0954 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
CERTFR-2026-AVI-0926 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
CERTFR-2026-AVI-0731 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.6.117 < 6.6.140
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.12.58 < 6.12.88
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.17.8 < 6.18
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.18.1 < 6.18.30
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.19 < 7.0.7
cpe:2.3:o:linux:linux_kernel:6.18:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*

Affected products

Product	Versions
Linux · Linux	affected d4187ec2641061748480cdc944fd07653fad50d5 < d3bd8040497968f6f5470018724ef7b0df92f707 ; affected f0b3ecdbb5bbee8ca6b2892aba3988c8a3ce858e < f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0 ; affected a04ea57aae375bdda1cb57034d8bcbb351e1f973 < 33c5bb50b9c40e8451e6aec4487a31d794b98d92 ; affected a04ea57aae375bdda1cb57034d8bcbb351e1f973 < 68a007a701bc06fa426507c551ef12514f2e721d ; affected a04ea57aae375bdda1cb57034d8bcbb351e1f973 < 694de316f607fe2473d52ca0707e3918e72c1562 ; affected 93e52b75f11a8f39b22993ae315b5b9a6b2668a3
Linux · Linux	affected 6.18 ; unaffected 0 < 6.18 ; unaffected 6.6.140 ≤ 6.6.* ; unaffected 6.12.88 ≤ 6.12.* ; unaffected 6.18.30 ≤ 6.18.* ; unaffected 7.0.7 ≤ 7.0.*

Product

Versions

Linux · Linux

affected d4187ec2641061748480cdc944fd07653fad50d5 < d3bd8040497968f6f5470018724ef7b0df92f707 ; affected f0b3ecdbb5bbee8ca6b2892aba3988c8a3ce858e < f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0 ; affected a04ea57aae375bdda1cb57034d8bcbb351e1f973 < 33c5bb50b9c40e8451e6aec4487a31d794b98d92 ; affected a04ea57aae375bdda1cb57034d8bcbb351e1f973 < 68a007a701bc06fa426507c551ef12514f2e721d ; affected a04ea57aae375bdda1cb57034d8bcbb351e1f973 < 694de316f607fe2473d52ca0707e3918e72c1562 ; affected 93e52b75f11a8f39b22993ae315b5b9a6b2668a3

Linux · Linux

affected 6.18 ; unaffected 0 < 6.18 ; unaffected 6.6.140 ≤ 6.6.* ; unaffected 6.12.88 ≤ 6.12.* ; unaffected 6.18.30 ≤ 6.18.* ; unaffected 7.0.7 ≤ 7.0.*

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD