{"id":"CVE-2023-24818","aliases":["EUVD-2023-28812","GHSA-69h9-vj5r-xcg6"],"status":"published","title":"RIOT-OS vulnerable to null pointer dereference during fragment forwarding","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. During forwarding of a fragment an uninitialized entry in the reassembly buffer is used. The NULL pointer dereference triggers a hard fault exception resulting in denial of service. Version 2022.10 fixes this issue. As a workaround, disable support for fragmented IP datagrams or apply the patches manually.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01212,"percentile":0.68751,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2023-04-24T14:23:44Z","modified":"2026-11-07T02:46:10Z","products":[{"vendor":"riot-os","product":"riot"}],"references":[{"url":"https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-69h9-vj5r-xcg6","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Patch","Vendor Advisory","advisory"]},{"url":"https://github.com/RIOT-OS/RIOT/pull/18817/commits/0bec3e245ed3815ad6c8cae54673f0021777768b","tags":["x_refsource_MISC","x_transferred","Patch","web"]},{"url":"https://github.com/RIOT-OS/RIOT/pull/18817/commits/17c70f7ee0b1445f2941f516f264ed4a096e82b7","tags":["x_refsource_MISC","x_transferred","Patch","web"]},{"url":"https://github.com/RIOT-OS/RIOT/pull/18817/commits/aa27ed71fa3e5d48dee1748dcf27b6323ec98a33","tags":["x_refsource_MISC","x_transferred","Patch","web"]},{"url":"https://github.com/RIOT-OS/RIOT/pull/18820/commits/4b23d93868a28edd8ebf2ff4ebe94540f2475008","tags":["x_refsource_MISC","x_transferred","Patch","web"]},{"url":"https://github.com/RIOT-OS/RIOT/pull/18820/commits/f4df5b4c4f841ccb460930894cf68ab10b55b971","tags":["x_refsource_MISC","x_transferred","Patch","web"]},{"url":"https://github.com/RIOT-OS/RIOT/pull/18820/commits/f4fb746d1acaacc962daeed3aa71aadfe307d20e","tags":["x_refsource_MISC","x_transferred","Patch","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/24xxx/CVE-2023-24818.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-24818","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-24818","title":"RIOT-OS vulnerable to null pointer dereference during fragment forwarding","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. During forwarding of a fragment an uninitialized entry in the reassembly buffer is used. The NULL pointer dereference triggers a hard fault exception resulting in denial of service. Version 2022.10 fixes this issue. As a workaround, disable support for fragmented IP datagrams or apply the patches manually.","status":"published","published":"2023-04-24T14:23:44.28Z","modified":"2025-02-04T19:10:24.001Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:35:27.006218Z"}],"euvd":[{"id":"EUVD-2023-28812","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. During forwarding of a fragment an uninitialized entry in the reassembly buffer is used. The NULL pointer dereference triggers a hard fault exception resulting in denial of service. Version 2022.10 fixes this issue. As a workaround, disable support for fragmented IP datagrams or apply the patches manually.","status":"published","published":"2023-04-24T14:23:44Z","modified":"2025-02-04T19:10:24Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:04:05.9572Z"}],"nvd":[{"id":"CVE-2023-24818","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. During forwarding of a fragment an uninitialized entry in the reassembly buffer is used. The NULL pointer dereference triggers a hard fault exception resulting in denial of service. Version 2022.10 fixes this issue. As a workaround, disable support for fragmented IP datagrams or apply the patches manually.","status":"published","published":"2023-04-24T15:15:07.84Z","modified":"2026-06-17T05:39:55.507Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:07:56.683259Z"}],"osv":[{"id":"CVE-2023-24818","title":"RIOT-OS vulnerable to null pointer dereference during fragment forwarding","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. During forwarding of a fragment an uninitialized entry in the reassembly buffer is used. The NULL pointer dereference triggers a hard fault exception resulting in denial of service. Version 2022.10 fixes this issue. As a workaround, disable support for fragmented IP datagrams or apply the patches manually.","status":"published","published":"2023-04-24T14:23:44.28Z","modified":"2026-11-07T02:46:10.828547653Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-476"],"updated_at":"2026-11-07T03:07:49.870704Z"}]}}