CVE-2026-31682Critical· 9.1▾ MidnightIn 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 li…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 50.1 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.5%
0.5% → 0.8%
Last analysed / modified upstream
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.
linux_kernel >= 4.15, < 5.10.253linux_kernel >= 5.11, < 5.15.203linux_kernel >= 5.16, < 6.1.168linux_kernel >= 6.2, < 6.6.134linux_kernel >= 6.7, < 6.12.81linux_kernel >= 6.13, < 6.18.22linux_kernel >= 6.19, < 6.19.12linux_kernel = 7.0Upgrade past the affected range:
linux_kernel 6.19.12Connected by shared product, vendor, weakness, or advisory.
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