Critical severity9.1NVD Advisory· Published Apr 25, 2026· Updated May 6, 2026
CVE-2026-31682
CVE-2026-31682
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 6 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=4.15,<5.10.253
- cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcdnvdPatch
- git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053nvdPatch
- git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47nvdPatch
- git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55nvdPatch
- git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270cnvdPatch
- git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16eanvdPatch
- git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2nvdPatch
- git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662nvdPatch
News mentions
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