CVE-2023-24822
Prior to version 2022.10, an attacker can send a crafted frame to the device resulting in a NULL pointer dereference while encoding a 6LoWPAN IPHC header.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.86%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
RIOT-OS, an operating system that supports Internet of Things devices, contains a network stack with the ability to process 6LoWPAN frames. Prior to version 2022.10, an attacker can send a crafted frame to the device resulting in a NULL pointer dereference while encoding a 6LoWPAN IPHC header. The NULL pointer dereference causes a hard fault exception, leading to denial of service. Version 2022.10 fixes this issue. As a workaround, apply the patches manually.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.86% probability · 58th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- riot-os/riot
- Source
- security-advisories@github.com
EPSS 0.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/RIOT-OS/RIOT/pull/18817/commits/639c04325de4ceb9d444955f4927bfae95843a39Patch
- https://github.com/RIOT-OS/RIOT/pull/18820/commits/7253e261556f252816f4a3b7c4f96fc10d642485Patch
- https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-8x69-5fhj-72whPatch, Vendor Advisory
- https://github.com/RIOT-OS/RIOT/pull/18817/commits/639c04325de4ceb9d444955f4927bfae95843a39Patch
- https://github.com/RIOT-OS/RIOT/pull/18820/commits/7253e261556f252816f4a3b7c4f96fc10d642485Patch
- https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-8x69-5fhj-72whPatch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.