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.
Affected products
linux: linux kernel
References10
- git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd Patch
- git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053 Patch
- git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47 Patch
- git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55 Patch
- git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c Patch
- git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea Patch
- git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2 Patch
- git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662 Patch
- cert-portal.siemens.com/productcert/html/ssa-019113.html
- cert-portal.siemens.com/productcert/html/ssa-082556.html
Metrics
- CVSS 3.1
-
9.1
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 1% percentile: 51 · as of 13 November 2026
- CWE
- CWE-125
Could this be exploited in your environment?
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