{"cve":{"cve_id":"CVE-2026-53230","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix slab-out-of-bounds in mlx5_query_nic_vport_mac_list\n\nmlx5_query_nic_vport_mac_list() sizes its firmware command buffer using\nthe PF's log_max_current_uc/mc_list capabilities. When querying a VF\nvport with a larger configured max (via devlink), the firmware response\ncan overflow this buffer:\n\n BUG: KASAN: slab-out-of-bounds in mlx5_query_nic_vport_mac_list+0x453/0x4c0 [mlx5_core]\n Read of size 4 at addr ff1100013ffc8a12 by task kworker/u96:2/385\n\n CPU: 12 UID: 0 PID: 385 Comm: kworker/u96:2 Not tainted 7.0.0-rc6+ #1 PREEMPT\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009)\n Workqueue: mlx5_esw_wq esw_vport_change_handler [mlx5_core]\n Call Trace:\n  <TASK>\n  dump_stack_lvl+0x69/0xa0\n  print_report+0x176/0x4e4\n  kasan_report+0xc8/0x100\n  mlx5_query_nic_vport_mac_list+0x453/0x4c0 [mlx5_core]\n  esw_update_vport_addr_list+0x2e3/0xda0 [mlx5_core]\n  esw_vport_change_handle_locked+0xa1f/0x1060 [mlx5_core]\n  esw_vport_change_handler+0x6a/0x90 [mlx5_core]\n  process_one_work+0x87f/0x15e0\n  worker_thread+0x62b/0x1020\n  kthread+0x375/0x490\n  ret_from_fork+0x4dc/0x810\n  ret_from_fork_asm+0x11/0x20\n  </TASK>\n\nFix by querying the vport's own HCA caps to size the buffer correctly.\nRefactor the function to allocate and return the MAC list internally,\nremoving the caller's dependency on knowing the correct max.","published_at":"2026-06-25T08:39:29.210000Z","last_modified_at":null,"cvss_v3_score":8.7,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/41781f2789309462520a93822e946521ed78f97f","https://git.kernel.org/stable/c/537d87784e81c3d7037525b99416455cee088cdc","https://git.kernel.org/stable/c/0f807764bb122fd63aa45f4229cb1ef2679fbd40","https://git.kernel.org/stable/c/2398e497389ed4be43f7cfbab499b49cec7dae1a","https://git.kernel.org/stable/c/894e036a24a26a6dd7b17d8d3fb5c53ab48a6074"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:51.545322Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e16aea2744abea612c27ee0eef606c6a6a8204de","version_start_inclusive":true,"version_end":"41781f2789309462520a93822e946521ed78f97f","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e16aea2744abea612c27ee0eef606c6a6a8204de:41781f2789309462520a93822e946521ed78f97f"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e16aea2744abea612c27ee0eef606c6a6a8204de","version_start_inclusive":true,"version_end":"537d87784e81c3d7037525b99416455cee088cdc","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e16aea2744abea612c27ee0eef606c6a6a8204de:537d87784e81c3d7037525b99416455cee088cdc"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e16aea2744abea612c27ee0eef606c6a6a8204de","version_start_inclusive":true,"version_end":"0f807764bb122fd63aa45f4229cb1ef2679fbd40","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e16aea2744abea612c27ee0eef606c6a6a8204de:0f807764bb122fd63aa45f4229cb1ef2679fbd40"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e16aea2744abea612c27ee0eef606c6a6a8204de","version_start_inclusive":true,"version_end":"2398e497389ed4be43f7cfbab499b49cec7dae1a","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e16aea2744abea612c27ee0eef606c6a6a8204de:2398e497389ed4be43f7cfbab499b49cec7dae1a"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e16aea2744abea612c27ee0eef606c6a6a8204de","version_start_inclusive":true,"version_end":"894e036a24a26a6dd7b17d8d3fb5c53ab48a6074","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e16aea2744abea612c27ee0eef606c6a6a8204de:894e036a24a26a6dd7b17d8d3fb5c53ab48a6074"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"4.5","version_start_inclusive":true,"version_end":"4.5","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:4.5:4.5"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"4.5","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:4.5"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.143","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.143:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.94","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.94:6.12.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.36","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.36:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.13","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.13:7.0.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.1","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.1:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/41781f2789309462520a93822e946521ed78f97f","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/537d87784e81c3d7037525b99416455cee088cdc","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/0f807764bb122fd63aa45f4229cb1ef2679fbd40","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/2398e497389ed4be43f7cfbab499b49cec7dae1a","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/894e036a24a26a6dd7b17d8d3fb5c53ab48a6074","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:39:29.210000Z","label":"CVE published","source":null}]}