Description
RIOT-OS, an operating system for Internet of Things (IoT) devices, contains a network stack with the ability to process 6LoWPAN frames. In versions 2023.01 and prior, an attacker can send a crafted frame which is forwarded by the device. During encoding of the packet a NULL pointer dereference occurs. This crashes the device leading to denial of service. A patch is available at pull request 19678. There are no known workarounds.
References (8)
Core 8
Core References
Vendor Advisory x_refsource_confirm
https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-r2pv-3jqc-vh7w
Issue Tracking, Patch x_refsource_misc
https://github.com/RIOT-OS/RIOT/pull/19678
Patch x_refsource_misc
https://github.com/RIOT-OS/RIOT/commit/c9d7863e5664a169035038628029bb07e090c5ff
Product x_refsource_misc
https://github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c#L1067
Product x_refsource_misc
https://github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c#L1495
Product x_refsource_misc
https://github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c#L1511
Scores
CVSS v3
7.5
EPSS
0.0029
EPSS Percentile
52.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-476
Status
published
Products (1)
riot-os/riot
< 2023.01
Published
May 30, 2023
Tracked Since
Feb 18, 2026