{"id":"AZL-27539","summary":"CVE-2023-38431 affecting package kernel for versions less than 5.15.122.1-2","details":"An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/connection.c in ksmbd does not validate the relationship between the NetBIOS header's length field and the SMB header sizes, via pdu_size in ksmbd_conn_handler_loop, leading to an out-of-bounds read.","modified":"2026-04-21T04:24:23.229258Z","published":"2023-07-18T00:15:09Z","upstream":["CVE-2023-38431"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-38431"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.122.1-2"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-27539.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}