{"id":"AZL-73046","summary":"CVE-2025-38477 affecting package kernel for versions less than 5.15.200.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_qfq: Fix race condition on qfq_aggregate\n\nA race condition can occur when 'agg' is modified in qfq_change_agg\n(called during qfq_enqueue) while other threads access it\nconcurrently. For example, qfq_dump_class may trigger a NULL\ndereference, and qfq_delete_class may cause a use-after-free.\n\nThis patch addresses the issue by:\n\n1. Moved qfq_destroy_class into the critical section.\n\n2. Added sch_tree_lock protection to qfq_dump_class and\nqfq_dump_class_stats.","modified":"2026-04-01T05:22:35.828203Z","published":"2025-07-28T12:15:29Z","upstream":["CVE-2025-38477"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38477"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.200.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-73046.json"}}],"schema_version":"1.7.5"}