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CVE-2026-43040

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CVE-2026-43040

Published: May 1, 2026

Modified: May 11, 2026

PUBLISHED

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.

VendorProductVersions

Linux

Linux

affected
31910575a9de61e78065e93846e8e7a4894a18bf - < 1da9023f6b071a38e5430ffbce4b70b2b1ac4f9c
affected
31910575a9de61e78065e93846e8e7a4894a18bf - < 2fe4d0ba690a69ad6ae9f7ab9bdc96e02610b648
affected
31910575a9de61e78065e93846e8e7a4894a18bf - < 11d7fe97421cfc81549940c20ed5ac9472d6db05
affected
31910575a9de61e78065e93846e8e7a4894a18bf - < 7f56d87e527bb5a13c3e8b0d5840cb6332822f6d
affected
31910575a9de61e78065e93846e8e7a4894a18bf - < 4f810c686fde509d1cdaa706322d9d2531f8f1a4

+3 more versions

Linux

Linux

affected
2.6.24
unaffected
0 - < 2.6.24
unaffected
5.10.253 - <= 5.10.*
unaffected
5.15.203 - <= 5.15.*
unaffected
6.1.168 - <= 6.1.*

+5 more versions

References

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