{"id":"CVE-2026-98074","published":"2026-09-25T11:17:36.730","lastModified":"2026-09-25T11:17:36.730","description":"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->curr_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->primary_is_promisc = 1.\n\nBecause bond->curr_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->curr_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).","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/19ba7ecfade159b3702c78a360fd7d971e2b7109","tags":[]},{"url":"https://git.kernel.org/stable/c/6d0ee411d5437f3d126ea6979acb83a8da29dc81","tags":[]},{"url":"https://git.kernel.org/stable/c/af602c7aa5fedc9be3043244017aef4f26c96b70","tags":[]},{"url":"https://git.kernel.org/stable/c/d6ef22e79c2be3612868daede0e9a84f05439d9e","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}