{"id":"AZL-57902","summary":"CVE-2025-21745 affecting package kernel for versions less than 5.15.179.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: Fix class @block_class's subsystem refcount leakage\n\nblkcg_fill_root_iostats() iterates over @block_class's devices by\nclass_dev_iter_(init|next)(), but does not end iterating with\nclass_dev_iter_exit(), so causes the class's subsystem refcount leakage.\n\nFix by ending the iterating with class_dev_iter_exit().","modified":"2026-04-01T05:19:14.329956Z","published":"2025-02-27T03:15:15Z","upstream":["CVE-2025-21745"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21745"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.179.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-57902.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}