{"cve":"CVE-2026-43099","nvd":{"published":"2026-05-06T10:16:23.400","modified":"2026-10-15T02:19:30.870","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: icmp: fix null-ptr-deref in icmp_build_probe()\n\nipv6_stub->ipv6_dev_find() may return ERR_PTR(-EAFNOSUPPORT) when the\nIPv6 stack is not active (CONFIG_IPV6=m and not loaded), and passing\nthis error pointer to dev_hold() will cause a kernel crash with\nnull-ptr-deref.\n\nInstead, silently discard the request. RFC 8335 does not appear to\ndefine a specific response for the case where an IPv6 interface\nidentifier is syntactically valid but the implementation cannot perform\nthe lookup at runtime, and silently dropping the request may safer than\nmisreporting \"No Such Interface\".","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/0f21bc261e60f0c696c58841c4873ff77ed83673","https://git.kernel.org/stable/c/47a8bf52156ac7e7a581eca31c1f964ba4258d4d","https://git.kernel.org/stable/c/5b9911582d441f72fe6ccb15ffe3303bbc07f6f5","https://git.kernel.org/stable/c/6be325206850a0891896d38bcf83a09d8b54ec48","https://git.kernel.org/stable/c/dc5db4db19766a61ad65d81d1f55b1c1e51ba78d"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:33:55.586217763+00:00"},"epss":{"cve":"CVE-2026-43099","score":0.00501,"percentile":0.42624,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}