VULNERABILITY INTELLIGENCE

CVE-2026-43040

CVSS score7.1 HIGH
EPSS probability0.13%
CISA KEVNot currently listed
Published2026-05-01
Last modified2026-10-15
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-909

Primary references