{"id":"DEBIAN-CVE-2022-49667","details":"In the Linux kernel, the following vulnerability has been resolved:  net: bonding: fix use-after-free after 802.3ad slave unbind  commit 0622cab0341c (\"bonding: fix 802.3ad aggregator reselection\"), resolve case, when there is several aggregation groups in the same bond. bond_3ad_unbind_slave will invalidate (clear) aggregator when __agg_active_ports return zero. So, ad_clear_agg can be executed even, when num_of_ports!=0. Than bond_3ad_unbind_slave can be executed again for, previously cleared aggregator. NOTE: at this time bond_3ad_unbind_slave will not update slave ports list, because lag_ports==NULL. So, here we got slave ports, pointing to freed aggregator memory.  Fix with checking actual number of ports in group (as was before commit 0622cab0341c (\"bonding: fix 802.3ad aggregator reselection\") ), before ad_clear_agg().  The KASAN logs are as follows:  [  767.617392] ================================================================== [  767.630776] BUG: KASAN: use-after-free in bond_3ad_state_machine_handler+0x13dc/0x1470 [  767.638764] Read of size 2 at addr ffff00011ba9d430 by task kworker/u8:7/767 [  767.647361] CPU: 3 PID: 767 Comm: kworker/u8:7 Tainted: G           O 5.15.11 #15 [  767.655329] Hardware name: DNI AmazonGo1 A7040 board (DT) [  767.660760] Workqueue: lacp_1 bond_3ad_state_machine_handler [  767.666468] Call trace: [  767.668930]  dump_backtrace+0x0/0x2d0 [  767.672625]  show_stack+0x24/0x30 [  767.675965]  dump_stack_lvl+0x68/0x84 [  767.679659]  print_address_description.constprop.0+0x74/0x2b8 [  767.685451]  kasan_report+0x1f0/0x260 [  767.689148]  __asan_load2+0x94/0xd0 [  767.692667]  bond_3ad_state_machine_handler+0x13dc/0x1470","modified":"2026-09-01T16:05:33.080165430Z","published":"2025-02-26T07:01:41.687Z","upstream":["CVE-2022-49667"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49667"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.14-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49667.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.14-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49667.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.14-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49667.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}