{"id":"AZL-104778","summary":"CVE-2026-98074 affecting package kernel 6.6.157.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: do not clear curr_active_slave prematurely when releasing all slaves\n\nWhen releasing all slaves during bond destruction (all == true),\n__bond_release_one() unconditionally clears bond-\u003ecurr_active_slave to\nNULL in every iteration.\n\nIf a backup slave is released before the active slave,\nbond_alb_deinit_slave() triggers rlb_teach_disabled_mac_on_primary(),\nwhich increments the active slave dev promiscuity counter and sets\nbond_info-\u003eprimary_is_promisc = 1.\n\nBecause bond-\u003ecurr_active_slave was prematurely cleared to NULL when\nreleasing the backup slave, the subsequent iteration releasing the active\nslave evaluates oldcurrent as NULL, so bond_change_active_slave(bond, NULL)\nis skipped. Consequently, bond_alb_handle_active_change() is never called\nto decrement the promiscuity counter, permanently leaking promiscuous\nmode on the physical device after bond teardown.\n\nWhen oldcurrent == slave, bond_change_active_slave(bond, NULL) already sets\nbond-\u003ecurr_active_slave to NULL. We only need to avoid selecting a new\nactive slave when all == true. Replace the if (all) branch with\nif (!all && oldcurrent == slave).","modified":"2026-09-26T14:16:24.533585778Z","published":"2026-09-25T11:17:36Z","upstream":["CVE-2026-98074"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98074"}],"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-104778.json"}}],"schema_version":"1.9.0"}