{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2023-54148", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-54148", "idYear": 2023, "status": "PUBLISHED", "publishedAt": "2025-12-24T13:07:00.260Z", "updatedAt": "2026-05-23T15:33:19.751Z", "importedAt": "2026-10-24T01:57:03.413Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "net/mlx5e: Move representor neigh cleanup to profile cleanup_tx", "summary": "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->cleanup_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->disable, which is before its profile->cleanup_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] \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---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "b17294e7aa8c39dbb9c3e28e2d1983c88b94b387", "status": "affected", "versionType": "git", "lessThan": "d628ba98eb1637acce44001e04c718d8dbb1f7ce" }, { "version": "2be5bd42a5bba1a05daedc86cf0e248210009669", "status": "affected", "versionType": "git", "lessThan": "36697c592cd0809e626df01b3644c23ac522a4d0" }, { "version": "2be5bd42a5bba1a05daedc86cf0e248210009669", "status": "affected", "versionType": "git", "lessThan": "d03b6e6f31820b84f7449cca022047f36c42bc3f" }, { "version": "10cbfecc0f99f579fb170feee866c9efaab7ee47", "status": "affected", "versionType": "git" }, { "version": "6.1.31", "status": "affected", "versionType": "semver", "lessThan": "6.1.45" }, { "version": "6.3.5", "status": "affected", "versionType": "semver", "lessThan": "6.4" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.4", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.4" }, { "version": "6.1.45", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.4.10", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.4.*" }, { "version": "6.5", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }