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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 6.1.170-1 |
| debian | bullseye | fixed | 6.1.170-1~deb11u1 |
| debian | forky | fixed | 6.19.12-1 |
| debian | sid | fixed | 6.19.12-1 |
| debian | trixie | fixed | 6.12.85-1 |
| linux-kernel | affected | 5.10.253 | |
| linux-kernel | 7.0 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| gcp | | |
References
- https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd
- https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053
- https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47
- https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55
- https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c
- https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea
- https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2
- https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662
- https://www.suse.com/security/cve/CVE-2026-31682.html
- https://security-tracker.debian.org/tracker/CVE-2026-31682
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.