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 Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.15, < 5.10.253 |
References
- https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcdPatch
- https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053Patch
- https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47Patch
- https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55Patch
- https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270cPatch
- https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16eaPatch
- https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2Patch
- https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662Patch
FAQ
What is CVE-2026-31682?
CVE-2026-31682 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 ass...
How severe is CVE-2026-31682?
CVE-2026-31682 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-31682?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.