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.
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History
Thu, 25 Jun 2026 18:30:00 +0000
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ssvc
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Thu, 25 Jun 2026 16:45:00 +0000
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| 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. | |
| Title | net: Maliciously fragmented IPv6 packets can prevent receiving/processing future incoming packets | |
| Weaknesses | CWE-772 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: zephyr
Published:
Updated: 2026-06-25T18:00:46.402Z
Reserved: 2026-06-25T16:13:43.055Z
Link: CVE-2026-13351
Updated: 2026-06-25T18:00:42.923Z
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OpenCVE Enrichment
Updated: 2026-06-25T18:00:07Z
Weaknesses