{"id":"AZL-6541","summary":"CVE-2021-28964 affecting package kernel for versions less than 5.10.78.1-1","details":"A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.","modified":"2026-04-01T05:20:33.278179Z","published":"2021-03-22T09:15:13Z","upstream":["CVE-2021-28964"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-28964"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.10.78.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-6541.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}