CVE-2026-13351

Description

Zephyr's IPv6 network stack can be prevented from receiving or processing future incoming packets by sending a small number of maliciously fragmented IPv6 packets. When such a packet is handled by the fragment-header processing path, the associated RX network packet buffer (allocated from a memory slab) is not released back to the pool. Repeating the malicious packet exhausts all RX buffer slots, after which the device can no longer obtain RX buffers and stops receiving traffic, resulting in a denial of service.

PUBLISHED Reserved 2026-06-25 | Published 2026-06-25 | Updated 2026-06-25 | Assigner zephyr

Problem types

Missing Release of Resource after Effective Lifetime

Product status

References

github.com/...zephyr/security/advisories/GHSA-cv4q-2j56-4wqf

cve.org (CVE-2026-13351)

nvd.nist.gov (CVE-2026-13351)

Download JSON