ipv6: Missing ipv6 nullptr-check in handle_ra_input

published 2023-07-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-12420

cvss: 5.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits: 0; none known

A missing nullptr-check in handle_ra_input can cause a nullptr-deref.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 23 mo ago (2024-11-12)

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c7fq-vqm6-v5pf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

zephyrproject-rtos Zephyr

Classification

Weakness

CWE-20 Improper Input Validation
CWE-476 NULL Pointer Dereference

References

github.com /zephyrproject-rtos/zephyr/security/advisories/GHSA-c7fq-vqm6-v5pf
exploit, vendor-advisory

Sources

CVE List CVE-2023-0359
NVD CVE-2023-0359

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary