{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2023-54216 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-54216 is a high-severity use after free vulnerability in Linux, published on 30 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-54216 and fix it if it is affected.\n\nWhat it is: CVE-2023-54216 is a high-severity use after free vulnerability in Linux, published on 30 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-54216 in the wild and no public exploit code.\n\nAffected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-54216/ (Markdown: https://insights.sbomify.com/CVE-2023-54216/index.md)","id":"CVE-2023-54216","markdown":"https://insights.sbomify.com/CVE-2023-54216/index.md","name":"CVE-2023-54216","record":{"aliases":["BELL-CVE-2023-54216","GHSA-7cww-g38x-r47j","UBUNTU-CVE-2023-54216"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel mlx5 driver allows attackers to cause a denial of service or potentially execute code.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: TC, Fix using eswitch mapping in nic mode\n\nCited patch is using the eswitch object mapping pool while\nin nic mode where it isn't initialized. This results in the\ntrace below [0].\n\nFix that by using either nic or eswitch object mapping pool\ndepending if eswitch is enabled or not.\n\n[0]:\n[  826.446057] ==================================================================\n[  826.446729] BUG: KASAN: slab-use-after-free in mlx5_add_flow_rules+0x30/0x490 [mlx5_core]\n[  826.447515] Read of size 8 at addr ffff888194485830 by task tc/6233\n\n[  826.448243] CPU: 16 PID: 6233 Comm: tc Tainted: G        W          6.3.0-rc6+ #1\n[  826.448890] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n[  826.449785] Call Trace:\n[  826.450052]  \u003cTASK\u003e\n[  826.450302]  dump_stack_lvl+0x33/0x50\n[  826.450650]  print_report+0xc2/0x610\n[  826.450998]  ? __virt_addr_valid+0xb1/0x130\n[  826.451385]  ? mlx5_add_flow_rules+0x30/0x490 [mlx5_core]\n[  826.451935]  kasan_report+0xae/0xe0\n[  826.452276]  ? mlx5_add_flow_rules+0x30/0x490 [mlx5_core]\n[  826.452829]  mlx5_add_flow_rules+0x30/0x490 [mlx5_core]\n[  826.453368]  ? __kmalloc_node+0x5a/0x120\n[  826.453733]  esw_add_restore_rule+0x20f/0x270 [mlx5_core]\n[  826.454288]  ? mlx5_eswitch_add_send_to_vport_meta_rule+0x260/0x260 [mlx5_core]\n[  826.455011]  ? mutex_unlock+0x80/0xd0\n[  826.455361]  ? __mutex_unlock_slowpath.constprop.0+0x210/0x210\n[  826.455862]  ? mapping_add+0x2cb/0x440 [mlx5_core]\n[  826.456425]  mlx5e_tc_action_miss_mapping_get+0x139/0x180 [mlx5_core]\n[  826.457058]  ? mlx5e_tc_update_skb_nic+0xb0/0xb0 [mlx5_core]\n[  826.457636]  ? __kasan_kmalloc+0x77/0x90\n[  826.458000]  ? __kmalloc+0x57/0x120\n[  826.458336]  mlx5_tc_ct_flow_offload+0x325/0xe40 [mlx5_core]\n[  826.458916]  ? ct_kernel_enter.constprop.0+0x48/0xa0\n[  826.459360]  ? mlx5_tc_ct_parse_action+0xf0/0xf0 [mlx5_core]\n[  826.459933]  ? mlx5e_mod_hdr_attach+0x491/0x520 [mlx5_core]\n[  826.460507]  ? mlx5e_mod_hdr_get+0x12/0x20 [mlx5_core]\n[  826.461046]  ? mlx5e_tc_attach_mod_hdr+0x154/0x170 [mlx5_core]\n[  826.461635]  mlx5e_configure_flower+0x969/0x2110 [mlx5_core]\n[  826.462217]  ? _raw_spin_lock_bh+0x85/0xe0\n[  826.462597]  ? __mlx5e_add_fdb_flow+0x750/0x750 [mlx5_core]\n[  826.463163]  ? kasan_save_stack+0x2e/0x40\n[  826.463534]  ? down_read+0x115/0x1b0\n[  826.463878]  ? down_write_killable+0x110/0x110\n[  826.464288]  ? tc_setup_action.part.0+0x9f/0x3b0\n[  826.464701]  ? mlx5e_is_uplink_rep+0x4c/0x90 [mlx5_core]\n[  826.465253]  ? mlx5e_tc_reoffload_flows_work+0x130/0x130 [mlx5_core]\n[  826.465878]  tc_setup_cb_add+0x112/0x250\n[  826.466247]  fl_hw_replace_filter+0x230/0x310 [cls_flower]\n[  826.466724]  ? fl_hw_destroy_filter+0x1a0/0x1a0 [cls_flower]\n[  826.467212]  fl_change+0x14e1/0x2030 [cls_flower]\n[  826.467636]  ? sock_def_readable+0x89/0x120\n[  826.468019]  ? fl_tmplt_create+0x2d0/0x2d0 [cls_flower]\n[  826.468509]  ? kasan_unpoison+0x23/0x50\n[  826.468873]  ? get_random_u16+0x180/0x180\n[  826.469244]  ? __radix_tree_lookup+0x2b/0x130\n[  826.469640]  ? fl_get+0x7b/0x140 [cls_flower]\n[  826.470042]  ? fl_mask_put+0x200/0x200 [cls_flower]\n[  826.470478]  ? __mutex_unlock_slowpath.constprop.0+0x210/0x210\n[  826.470973]  ? fl_tmplt_create+0x2d0/0x2d0 [cls_flower]\n[  826.471427]  tc_new_tfilter+0x644/0x1050\n[  826.471795]  ? tc_get_tfilter+0x860/0x860\n[  826.472170]  ? __thaw_task+0x130/0x130\n[  826.472525]  ? arch_stack_walk+0x98/0xf0\n[  826.472892]  ? cap_capable+0x9f/0xd0\n[  826.473235]  ? security_capable+0x47/0x60\n[  826.473608]  rtnetlink_rcv_msg+0x1d5/0x550\n[  826.473985]  ? rtnl_calcit.isra.0+0x1f0/0x1f0\n[  826.474383]  ? __stack_depot_save+0x35/0x4c0\n[  826.474779]  ? kasan_save_stack+0x2e/0x40\n[  826.475149]  ? kasan_save_stack+0x1e/0x40\n[  826.475518]  ? __kasan_record_aux_stack+0x9f/0xb0\n[  826.475939]  ? task_work_add+0x77/0x1c0\n[  826.476305]  netlink_rcv_skb+0xe0/0x210\n---truncated---","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"net/mlx5e: TC, Fix using eswitch mapping in nic mode","id":"CVE-2023-54216","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2023"},"n_packages":0,"n_references":2,"next":{"headline":"Revert \"drm/msm: Add missing check and destroy for alloc_ordered_workqueue\"","id":"CVE-2023-54217"},"packages":[],"prev":{"headline":"virtio-vdpa: Fix cpumask memory leak in virtio_vdpa_find_vqs()","id":"CVE-2023-54215"},"products":["Linux"],"published":"2025-12-30","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel mlx5 driver allows attackers to cause a denial of service or potentially execute code.","url":"https://insights.sbomify.com/CVE-2023-54216/"}