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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-43040 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak When processing Router Advertisements with user options the kernel builds an RTM_NEWNDUSEROPT netlink message. The nduseroptmsg struct has three padding fields that are never zeroed and can leak kernel data The fix is simple, just zeroes the padding fields.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/11d7fe97421cfc81549940c20ed5ac9472d6db05 kernel.org Patch 
https://git.kernel.org/stable/c/1da9023f6b071a38e5430ffbce4b70b2b1ac4f9c kernel.org Patch 
https://git.kernel.org/stable/c/2fe4d0ba690a69ad6ae9f7ab9bdc96e02610b648 kernel.org Patch 
https://git.kernel.org/stable/c/4f810c686fde509d1cdaa706322d9d2531f8f1a4 kernel.org Patch 
https://git.kernel.org/stable/c/7f56d87e527bb5a13c3e8b0d5840cb6332822f6d kernel.org Patch 
https://git.kernel.org/stable/c/ae05340ccaa9d347fe85415609e075545bec589f kernel.org Patch 
https://git.kernel.org/stable/c/b485eef3d97b7aae55ce669b6de555ec81f3d21c kernel.org Patch 
https://git.kernel.org/stable/c/ef3645606e4a635d5062a492f22b7f490852ee67 kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-909 Missing Initialization of Resource cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-43040
NVD Published Date:
05/01/2026
NVD Last Modified:
05/08/2026
Source:
kernel.org