CVE-2023-24820

RIOT-OS vulnerable to Integer Underflow during IPHC receive

HIGH
7.5
CVSS Score
Published: April 24, 2023 at 02:59 PM UTC
Updated: June 17, 2026 at 05:39 AM UTC
1 product affected across 1 vendorRIOT

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Severity
HIGH7.5
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

RIOT-OS, an operating system that supports Internet of Things devices, contains a network stack with the ability to process 6LoWPAN frames. An attacker can send a crafted frame to the device resulting in a large out of bounds write beyond the packet buffer. The write will create a hard fault exception after reaching the last page of RAM. The hard fault is not handled and the system will be stuck until reset. Thus the impact is denial of service. Version 2022.10 fixes this issue. As a workaround, apply the patch manually.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2022.10
Affected range stops below 2022.10, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-191CWE-787

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