CVE-2026-31682 | BDVDB-2026-329044 Detail
LinuxLinux
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact high. Attack vector: network.
Weaknesses#
- CWE-125 Out-of-bounds Read
References#
- 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
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.