CVE-2026-31682

CRITICAL EPSS 33.8%
Published Apr 25, 20262mo ago · Modified Jun 17, 20262w ago
9.1 CVSS 3.1
Critical
Find Similar
Published Apr 25, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
9.1
Exploitability
3.9
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
33.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 13

VendorProductVersionRange
linuxlinux_kernel*≥4.15  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.134
linuxlinux_kernel*≥6.7  –  <6.12.81
linuxlinux_kernel*≥6.13  –  <6.18.22
linuxlinux_kernel*≥6.19  –  <6.19.12
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662
    Patch