{"id":"AZL-71375","summary":"CVE-2025-40240 affecting package kernel for versions less than 6.6.117.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: avoid NULL dereference when chunk data buffer is missing\n\nchunk-\u003eskb pointer is dereferenced in the if-block where it's supposed\nto be NULL only.\n\nchunk-\u003eskb can only be NULL if chunk-\u003ehead_skb is not. Check for frag_list\ninstead and do it just before replacing chunk-\u003eskb. We're sure that\notherwise chunk-\u003eskb is non-NULL because of outer if() condition.","modified":"2026-04-01T05:22:02.503396Z","published":"2025-12-04T16:16:17Z","upstream":["CVE-2025-40240"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40240"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.117.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-71375.json"}}],"schema_version":"1.7.5"}