CVE-2026-31682
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.48%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.48% probability · 40th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.