{"id":"CVE-2023-54148","summary":"net/mlx5e: Move representor neigh cleanup to profile cleanup_tx","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Move representor neigh cleanup to profile cleanup_tx\n\nFor IP tunnel encapsulation in ECMP (Equal-Cost Multipath) mode, as\nthe flow is duplicated to the peer eswitch, the related neighbour\ninformation on the peer uplink representor is created as well.\n\nIn the cited commit, eswitch devcom unpair is moved to uplink unload\nAPI, specifically the profile-\u003ecleanup_tx. If there is a encap rule\noffloaded in ECMP mode, when one eswitch does unpair (because of\nunloading the driver, for instance), and the peer rule from the peer\neswitch is going to be deleted, the use-after-free error is triggered\nwhile accessing neigh info, as it is already cleaned up in uplink's\nprofile-\u003edisable, which is before its profile-\u003ecleanup_tx.\n\nTo fix this issue, move the neigh cleanup to profile's cleanup_tx\ncallback, and after mlx5e_cleanup_uplink_rep_tx is called. The neigh\ninit is moved to init_tx for symmeter.\n\n[ 2453.376299] BUG: KASAN: slab-use-after-free in mlx5e_rep_neigh_entry_release+0x109/0x3a0 [mlx5_core]\n[ 2453.379125] Read of size 4 at addr ffff888127af9008 by task modprobe/2496\n\n[ 2453.381542] CPU: 7 PID: 2496 Comm: modprobe Tainted: G    B              6.4.0-rc7+ #15\n[ 2453.383386] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n[ 2453.384335] Call Trace:\n[ 2453.384625]  \u003cTASK\u003e\n[ 2453.384891]  dump_stack_lvl+0x33/0x50\n[ 2453.385285]  print_report+0xc2/0x610\n[ 2453.385667]  ? __virt_addr_valid+0xb1/0x130\n[ 2453.386091]  ? mlx5e_rep_neigh_entry_release+0x109/0x3a0 [mlx5_core]\n[ 2453.386757]  kasan_report+0xae/0xe0\n[ 2453.387123]  ? mlx5e_rep_neigh_entry_release+0x109/0x3a0 [mlx5_core]\n[ 2453.387798]  mlx5e_rep_neigh_entry_release+0x109/0x3a0 [mlx5_core]\n[ 2453.388465]  mlx5e_rep_encap_entry_detach+0xa6/0xe0 [mlx5_core]\n[ 2453.389111]  mlx5e_encap_dealloc+0xa7/0x100 [mlx5_core]\n[ 2453.389706]  mlx5e_tc_tun_encap_dests_unset+0x61/0xb0 [mlx5_core]\n[ 2453.390361]  mlx5_free_flow_attr_actions+0x11e/0x340 [mlx5_core]\n[ 2453.391015]  ? complete_all+0x43/0xd0\n[ 2453.391398]  ? free_flow_post_acts+0x38/0x120 [mlx5_core]\n[ 2453.392004]  mlx5e_tc_del_fdb_flow+0x4ae/0x690 [mlx5_core]\n[ 2453.392618]  mlx5e_tc_del_fdb_peers_flow+0x308/0x370 [mlx5_core]\n[ 2453.393276]  mlx5e_tc_clean_fdb_peer_flows+0xf5/0x140 [mlx5_core]\n[ 2453.393925]  mlx5_esw_offloads_unpair+0x86/0x540 [mlx5_core]\n[ 2453.394546]  ? mlx5_esw_offloads_set_ns_peer.isra.0+0x180/0x180 [mlx5_core]\n[ 2453.395268]  ? down_write+0xaa/0x100\n[ 2453.395652]  mlx5_esw_offloads_devcom_event+0x203/0x530 [mlx5_core]\n[ 2453.396317]  mlx5_devcom_send_event+0xbb/0x190 [mlx5_core]\n[ 2453.396917]  mlx5_esw_offloads_devcom_cleanup+0xb0/0xd0 [mlx5_core]\n[ 2453.397582]  mlx5e_tc_esw_cleanup+0x42/0x120 [mlx5_core]\n[ 2453.398182]  mlx5e_rep_tc_cleanup+0x15/0x30 [mlx5_core]\n[ 2453.398768]  mlx5e_cleanup_rep_tx+0x6c/0x80 [mlx5_core]\n[ 2453.399367]  mlx5e_detach_netdev+0xee/0x120 [mlx5_core]\n[ 2453.399957]  mlx5e_netdev_change_profile+0x84/0x170 [mlx5_core]\n[ 2453.400598]  mlx5e_vport_rep_unload+0xe0/0xf0 [mlx5_core]\n[ 2453.403781]  mlx5_eswitch_unregister_vport_reps+0x15e/0x190 [mlx5_core]\n[ 2453.404479]  ? mlx5_eswitch_register_vport_reps+0x200/0x200 [mlx5_core]\n[ 2453.405170]  ? up_write+0x39/0x60\n[ 2453.405529]  ? kernfs_remove_by_name_ns+0xb7/0xe0\n[ 2453.405985]  auxiliary_bus_remove+0x2e/0x40\n[ 2453.406405]  device_release_driver_internal+0x243/0x2d0\n[ 2453.406900]  ? kobject_put+0x42/0x2d0\n[ 2453.407284]  bus_remove_device+0x128/0x1d0\n[ 2453.407687]  device_del+0x240/0x550\n[ 2453.408053]  ? waiting_for_supplier_show+0xe0/0xe0\n[ 2453.408511]  ? kobject_put+0xfa/0x2d0\n[ 2453.408889]  ? __kmem_cache_free+0x14d/0x280\n[ 2453.409310]  mlx5_rescan_drivers_locked.part.0+0xcd/0x2b0 [mlx5_core]\n[ 2453.409973]  mlx5_unregister_device+0x40/0x50 [mlx5_core]\n[ 2453.410561]  mlx5_uninit_one+0x3d/0x110 [mlx5_core]\n[ 2453.411111]  remove_one+0x89/0x130 [mlx5_core]\n[ 24\n---truncated---","modified":"2026-05-18T05:57:12.761906501Z","published":"2025-12-24T13:07:00.260Z","related":["SUSE-SU-2026:0263-1","SUSE-SU-2026:0278-1","SUSE-SU-2026:0281-1","SUSE-SU-2026:0293-1","SUSE-SU-2026:0315-1","SUSE-SU-2026:0317-1","SUSE-SU-2026:20477-1","SUSE-SU-2026:20498-1","SUSE-SU-2026:20845-1","SUSE-SU-2026:20876-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54148.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/36697c592cd0809e626df01b3644c23ac522a4d0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d03b6e6f31820b84f7449cca022047f36c42bc3f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d628ba98eb1637acce44001e04c718d8dbb1f7ce"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54148.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54148"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b17294e7aa8c39dbb9c3e28e2d1983c88b94b387"},{"fixed":"d628ba98eb1637acce44001e04c718d8dbb1f7ce"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2be5bd42a5bba1a05daedc86cf0e248210009669"},{"fixed":"36697c592cd0809e626df01b3644c23ac522a4d0"},{"fixed":"d03b6e6f31820b84f7449cca022047f36c42bc3f"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"10cbfecc0f99f579fb170feee866c9efaab7ee47"}]}],"versions":["v6.1.44","v6.1.43","v6.1.42","v6.1.41","v6.1.40","v6.1.39","v6.1.38","v6.1.37","v6.1.36","v6.1.35","v6.1.34","v6.1.33","v6.1.32","v6.1.31","v6.3.4","v6.3.3","v6.3.2","v6.3","v6.3.1","v6.3-rc1","v6.3-rc7","v6.3-rc2","v6.3-rc3","v6.3-rc5","v6.3-rc6","v6.3-rc4","v6.2-rc6","v6.2-rc1","v6.2","v6.2-rc2","v6.2-rc8","v6.2-rc5","v6.2-rc4","v6.2-rc7","v6.2-rc3","v6.1-rc1","v6.1","v6.1-rc8","v6.1-rc3","v6.1-rc6","v6.1-rc7","v6.1-rc4","v6.1-rc2","v6.1-rc5","v6.0-rc1","v6.0","v6.0-rc7","v6.0-rc3","v6.0-rc2","v6.0-rc6","v6.0-rc4","v6.0-rc5","v5.19","v5.19-rc1","v5.19-rc5","v5.19-rc8","v5.19-rc6","v5.18","v5.19-rc2","v5.19-rc7","v5.19-rc3","v5.19-rc4","v5.18-rc1","v5.18-rc7","v5.18-rc2","v5.18-rc5","v5.17","v5.18-rc4","v5.18-rc3","v5.18-rc6","v5.17-rc6","v5.17-rc4","v5.17-rc8","v5.17-rc7","v5.17-rc1","v5.17-rc3","v5.17-rc2","v5.17-rc5","v5.16","v5.16-rc1","v5.16-rc8","v5.16-rc5","v5.16-rc6","v5.16-rc7","v5.16-rc3","v5.16-rc2","v5.16-rc4","v5.15","v5.15-rc2","v5.15-rc1","v5.15-rc4","v5.15-rc7","v5.15-rc3","v5.15-rc5","v5.15-rc6","v5.14","v5.14-rc3","v5.14-rc1","v5.14-rc2","v5.14-rc7","v5.14-rc6","v5.13-rc1","v5.14-rc5","v5.14-rc4","v5.13","v5.13-rc6","v5.13-rc7","v5.13-rc3","v5.13-rc2","v5.13-rc4","v5.13-rc5","v5.12","v5.12-rc2","v5.12-rc1-dontuse","v5.12-rc1","v5.12-rc8","v5.12-rc3","v5.12-rc7","v5.12-rc5","v5.12-rc6","v5.12-rc4","v5.10","v5.11","v5.11-rc3","v5.11-rc7","v5.11-rc6","v5.11-rc5","v5.11-rc1","v5.11-rc4","v5.11-rc2","v5.10-rc1","v5.10-rc7","v5.10-rc4","v5.10-rc3","v5.10-rc6","v5.9","v5.10-rc2","v5.10-rc5","v5.9-rc1","v5.9-rc7","v5.9-rc8","v5.9-rc6","v5.9-rc4","v5.9-rc5","v5.9-rc3","v5.9-rc2","v5.8","v5.7","v5.8-rc2","v5.8-rc1","v5.8-rc7","v5.8-rc5","v5.8-rc3","v5.8-rc4","v5.8-rc6","v5.7-rc4","v5.7-rc7","v5.7-rc1","v5.7-rc3","v5.7-rc2","v5.7-rc5","v5.7-rc6","v5.6","v5.6-rc1","v5.6-rc7","v5.6-rc6","v5.6-rc3","v5.6-rc4","v5.6-rc2","v5.6-rc5","v5.5","v5.5-rc5","v5.5-rc7","v5.5-rc2","v5.5-rc1","v5.4","v5.5-rc4","v5.5-rc3","v5.5-rc6","v5.4-rc1","v5.4-rc6","v5.4-rc3","v5.4-rc4","v5.4-rc8","v5.4-rc7","v5.4-rc5","v5.3","v5.4-rc2","v5.3-rc5","v5.3-rc1","v5.3-rc2","v5.3-rc3","v5.3-rc8","v5.3-rc7","v5.3-rc4","v5.2","v5.3-rc6","v5.2-rc2","v5.2-rc7","v5.2-rc4","v5.2-rc1","v5.2-rc5","v5.2-rc6","v5.2-rc3","v5.1","v5.0-rc8","v5.1-rc7","v5.1-rc1","v5.1-rc6","v5.1-rc5","v5.0","v5.1-rc3","v5.1-rc2","v5.1-rc4","v5.0-rc1","v5.0-rc4","v5.0-rc3","v5.0-rc6","v5.0-rc7","v5.0-rc2","v5.0-rc5","v4.20-rc1","v4.19","v4.20","v4.20-rc7","v4.20-rc5","v4.20-rc6","v4.20-rc4","v4.20-rc2","v4.20-rc3","v4.19-rc2","v4.19-rc8","v4.19-rc4","v4.19-rc1","v4.19-rc7","v4.19-rc6","v4.19-rc5","v4.19-rc3","v4.18","v4.18-rc1","v4.18-rc8","v4.18-rc2","v4.18-rc5","v4.18-rc6","v4.18-rc7","v4.17","v4.18-rc3","v4.18-rc4","v4.17-rc1","v4.17-rc2","v4.17-rc7","v4.17-rc3","v4.17-rc4","v4.16","v4.17-rc6","v4.17-rc5","v4.16-rc7","v4.16-rc4","v4.16-rc1","v4.16-rc2","v4.16-rc5","v4.16-rc3","v4.16-rc6","v4.14","v4.15","v4.15-rc1","v4.15-rc4","v4.15-rc9","v4.15-rc8","v4.15-rc7","v4.15-rc3","v4.15-rc2","v4.15-rc5","v4.15-rc6","v4.14-rc1","v4.14-rc7","v4.14-rc3","v4.13","v4.14-rc8","v4.14-rc4","v4.14-rc6","v4.14-rc2","v4.14-rc5","v4.13-rc2","v4.13-rc1","v4.13-rc3","v4.13-rc7","v4.13-rc4","v4.13-rc5","v4.13-rc6","v4.12-rc1","v4.12","v4.12-r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