CVE-2026-72392: ipv6: fib6: fix NULL deref in fib6_walk_continue() on multi-batch dump
CSIRTS triage
- What
- NULL dereference in IPv6 FIB6 walk continue on multi-batch dump causes kernel panic.
- Who is affected
- Systems performing IPv6 routing table dumps with multi-batch operations.
- Urgency
- Moderate priority; denial of service through kernel panic in IPv6 FIB operations.
- Action
- Apply kernel patch fixing NULL pointer check in fib6_walk_continue() for multi-batch dumps.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72392
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-723920.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-72392 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
Recent advisories for ipv6
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
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