{"id":"CVE-2026-72344","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-72344","summary":"net/mlx5e: TC, skip peer flow cleanup when LAG seq is unavailable","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: TC, skip peer flow cleanup when LAG seq is unavailable\n\nmlx5_lag_get_dev_seq() will return error when the peer isn't in the LAG\nor when no device is marked as master. Result bad memory access and kernel\ncrash[1].\n\nHence, skip the peer when lookup fails.\n\nNote: In case there are peer flows, they are cleaned before LAG cleared\nthe master mark.\n\n[1]\nRIP: 0010:mlx5e_tc_del_fdb_peers_flow+0x3d/0x350 [mlx5_core]\nCall Trace:\n <TASK>\n mlx5e_tc_clean_fdb_peer_flows+0xc1/0x130 [mlx5_core]\n mlx5_esw_offloads_unpair+0x3a/0x400 [mlx5_core]\n mlx5_esw_offloads_devcom_event+0xee/0x360 [mlx5_core]\n mlx5_devcom_send_event+0x7a/0x140 [mlx5_core]\n mlx5_esw_offloads_devcom_cleanup+0x2f/0x90 [mlx5_core]\n mlx5e_tc_esw_cleanup+0x28/0xf0 [mlx5_core]\n mlx5e_rep_tc_cleanup+0x19/0x30 [mlx5_core]\n mlx5e_cleanup_uplink_rep_tx+0x36/0x40 [mlx5_core]\n mlx5e_cleanup_rep_tx+0x55/0x60 [mlx5_core]\n mlx5e_detach_netdev+0x96/0xf0 [mlx5_core]\n mlx5e_netdev_change_profile+0x5b/0x120 [mlx5_core]\n mlx5e_netdev_attach_nic_profile+0x1b/0x30 [mlx5_core]\n mlx5e_vport_rep_unload+0xdd/0x110 [mlx5_core]\n __esw_offloads_unload_rep+0x81/0xb0 [mlx5_core]\n mlx5_eswitch_unregister_vport_reps+0x1d7/0x220 [mlx5_core]\n mlx5e_rep_remove+0x22/0x30 [mlx5_core]\n device_release_driver_internal+0x194/0x1f0\n bus_remove_device+0xe8/0x1b0\n device_del+0x159/0x3c0\n mlx5_rescan_drivers_locked+0xbc/0x2d0 [mlx5_core]\n mlx5_unregister_device+0x54/0x80 [mlx5_core]\n mlx5_uninit_one+0x73/0x130 [mlx5_core]\n remove_one+0x78/0xe0 [mlx5_core]\n pci_device_remove+0x39/0xa0","published":"2026-08-15T05:55:49.751Z","modified":"2026-08-18T03:56:41.873082039Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"7.1.5"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/5a95aa0198af75047d98fb72950642c89dab770f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7bed4af0ced82948d660205efecd551ef8bc3912"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72344.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72344"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:41.873082039Z"}}