CVE-2026-46142
net: libwx: fix VF illegal register access
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).
INFO
Published Date :
May 28, 2026, 10:16 a.m.
Last Modified :
June 24, 2026, 5:07 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Apply Linux kernel patches for net: libwx.
- Ensure VFs obtain bus function ID directly.
- Update the Linux kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-46142.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-46142 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-46142
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-46142 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-46142 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Jun. 24, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.18:-:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.18:rc7:*:*:*:*:*:* *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:*:*:*:*:*:*:*:* versions from (including) 6.17.8 up to (excluding) 6.18 *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.7 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.12.58 up to (excluding) 6.12.88 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.18.1 up to (excluding) 6.18.30 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.6.117 up to (excluding) 6.6.140 Added Reference Type kernel.org: https://git.kernel.org/stable/c/33c5bb50b9c40e8451e6aec4487a31d794b98d92 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/68a007a701bc06fa426507c551ef12514f2e721d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/694de316f607fe2473d52ca0707e3918e72c1562 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d3bd8040497968f6f5470018724ef7b0df92f707 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0 Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd4187ec2641061748480cdc944fd07653fad50d5', 'lessThan': 'd3bd8040497968f6f5470018724ef7b0df92f707', 'versionType': 'git'}, {'status': 'affected', 'version': 'f0b3ecdbb5bbee8ca6b2892aba3988c8a3ce858e', 'lessThan': 'f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0', 'versionType': 'git'}, {'status': 'affected', 'version': 'a04ea57aae375bdda1cb57034d8bcbb351e1f973', 'lessThan': '33c5bb50b9c40e8451e6aec4487a31d794b98d92', 'versionType': 'git'}, {'status': 'affected', 'version': 'a04ea57aae375bdda1cb57034d8bcbb351e1f973', 'lessThan': '68a007a701bc06fa426507c551ef12514f2e721d', 'versionType': 'git'}, {'status': 'affected', 'version': 'a04ea57aae375bdda1cb57034d8bcbb351e1f973', 'lessThan': '694de316f607fe2473d52ca0707e3918e72c1562', 'versionType': 'git'}, {'status': 'affected', 'version': '93e52b75f11a8f39b22993ae315b5b9a6b2668a3', 'versionType': 'git'}, {'status': 'affected', 'version': '6.6.117', 'lessThan': '6.6.140', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.58', 'lessThan': '6.12.88', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.17.8', 'lessThan': '6.18', 'versionType': 'semver'}], 'programFiles': ['drivers/net/ethernet/wangxun/libwx/wx_hw.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.18', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.140', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.88', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.30', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.7', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/wangxun/libwx/wx_hw.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2026
Action Type Old Value New Value Added 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). Added Reference https://git.kernel.org/stable/c/33c5bb50b9c40e8451e6aec4487a31d794b98d92 Added Reference https://git.kernel.org/stable/c/68a007a701bc06fa426507c551ef12514f2e721d Added Reference https://git.kernel.org/stable/c/694de316f607fe2473d52ca0707e3918e72c1562 Added Reference https://git.kernel.org/stable/c/d3bd8040497968f6f5470018724ef7b0df92f707 Added Reference https://git.kernel.org/stable/c/f6e656f7cea16b638675a2ab7d7e4cf2516c5eb0