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High severity8.3NVD Advisory· Published Oct 12, 2021· Updated Jun 17, 2026

CVE-2021-3323

CVE-2021-3323

Description

Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr. Zephyr versions >= >=2.4.0 contain Integer Underflow (Wrap or Wraparound) (CWE-191). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Zephyrproject Rtos/Zephyr3 versions
    cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*range: >=2.4.0,<2.5.0
    • (no CPE)range: >=2.4.0
    • (no CPE)range: >=2.4.0

Patches

Vulnerability mechanics

References

1

News mentions

0

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