CVEvulnerability
CVE-2026-13351
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-06-25
- Last modified
- 2026-10-25
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-772
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.
Affected configurations
• zephyrproject zephyr (<= 4.4.1)
Related
Weakness · CWE (1)
- CWE-772 Missing Release of Resource after Effective Lifetime weakness
References
- https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-cv4q-2j56-4wqf Exploit, Patch, Vendor Advisory