EUVD Vulnerability Catalog
EUVD-2026-25649
Severity: CRITICAL
Base Score: 9.1
CVSS Version: 3.1
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
bridge: br_nd_send: linearize skb before parsing ND options
br_nd_send() parses neighbour discovery options from ns->opt[] and
assumes that these options are in the linear part of request.
Its callers only guarantee that the ICMPv6 header and target address
are available, so the option area can still be non-linear. Parsing
ns->opt[] in that case can access data past the linear buffer.
Linearize request before option parsing and derive ns from the linear
network header.
CVSS Vector Analysis
Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
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Attack Vector (AV): Network
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Attack Complexity (AC): Low
▪
Privileges Required (PR): None
▪
User Interaction (UI): None
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Scope (S): Unchanged
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Confidentiality Impact (C): High
▪
Integrity Impact (I): None
▪
Availability Impact (A): High
Affected Vendors & Systems
Vendor
Linux
References & Advisory Links
- https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662
- https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47
- https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2
- https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55
- https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd
- https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c
- https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053
- https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea
Metadata Profile
Database Authority
European Union Agency for Cybersecurity (ENISA) EUVD
Assigner
Linux
EPSS Probability
0.49
Known Aliases
GHSA-r8hp-cx2w-5c4r
CVE-2026-31682
Published On
2026-04-25
Last Updated
2026-10-19