CVE-2021-3323

Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr

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Published Oct 12, 2021 CVSS 3.1 · 8.3 High EPSS < 1% KEV · Not listed

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

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

zephyrproject-rtos

zephyr

affected

Version	Status	Constraints
`>=2.4.0`	affected	< unspecified

Configuration 1 [-]

cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-26654	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

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.924% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc

History

No history.

Subscriptions

Zephyrproject Zephyr

Weaknesses

CWE-191

Sources

CVE record Updated: Sep 16, 2024, 5:07 PM

Status: PUBLISHED
Assigner: zephyr
Published: Oct 12, 2021, 9:50 PM
Updated: Sep 16, 2024, 5:07 PM
Reserved: Jan 27, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 4:04 AM

Status: Modified
Published: Oct 12, 2021, 10:15 PM
Modified: Jun 17, 2026, 4:04 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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