{"id":"AZL-104570","summary":"CVE-2026-97950 affecting package kernel 6.6.157.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nconfigfs: pin the symlink target's dirent instead of chasing -\u003eci_dentry\n\ncreate_link() reads the target's configfs_dirent from\nitem-\u003eci_dentry-\u003ed_fsdata, relying on the item reference taken by\nget_target().  That reference pins the item, not its dentry: the dentry is\npinned by DCACHE_PERSISTENT, which configfs_remove_dir() releases via\nsimple_rmdir() while the item is still alive.  A symlink racing with rmdir\nof its target can therefore find -\u003eci_dentry freed and its dirent\nreleased, triggering WARN_ON(!atomic_read(&sd-\u003es_count)) in configfs_get().\n\nTake the dirent in get_target() as well, under -\u003ed_lock and atomically\nwith the item reference, and pass it down to create_link().  A hashed\ndentry has not been killed yet, so its -\u003ed_fsdata reference keeps the\ndirent alive there.","modified":"2026-09-27T05:34:32Z","published":"2026-09-25T11:17:22Z","upstream":["CVE-2026-97950"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97950"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.157.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-104570.json"}}],"schema_version":"1.9.0"}