PT-2026-35142 · Linux · Linux Kernel

Published 2026-04-25 · Updated 2026-05-26 · CVE-2026-31682

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the br nd send() function where neighbour discovery options are parsed from ns->opt[] under the assumption that these options reside in the linear part of the request. Because callers only guarantee the availability of the ICMPv6 header and target address, the option area may remain non-linear. This can lead to the system accessing data beyond the linear buffer during parsing.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-31682

ECHO-DC72-D8B2-710B

OESA-2026-2310

OESA-2026-2311

OESA-2026-2312

OESA-2026-2313

OESA-2026-2314

Affected Products

Linux Kernel

References · 78

• https://ubuntu.com/security/CVE-2026-31682 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43429 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43265 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43019 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43284 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-31682 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-31682 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43017 · Security Note
• https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31682 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31679 · Security Note
• https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31555 · Security Note
• https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31575 · Security Note