{"cve":{"cve_id":"CVE-2026-53033","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\nbpf, sockmap: Take state lock for af_unix iter\n\nWhen a BPF iterator program updates a sockmap, there is a race condition in\nunix_stream_bpf_update_proto() where the `peer` pointer can become stale[1]\nduring a state transition TCP_ESTABLISHED -> TCP_CLOSE.\n\n        CPU0 bpf                          CPU1 close\n        --------                          ----------\n// unix_stream_bpf_update_proto()\nsk_pair = unix_peer(sk)\nif (unlikely(!sk_pair))\n   return -EINVAL;\n                                     // unix_release_sock()\n                                     skpair = unix_peer(sk);\n                                     unix_peer(sk) = NULL;\n                                     sock_put(skpair)\nsock_hold(sk_pair) // UaF\n\nMore practically, this fix guarantees that the iterator program is\nconsistently provided with a unix socket that remains stable during\niterator execution.\n\n[1]:\nBUG: KASAN: slab-use-after-free in unix_stream_bpf_update_proto+0x155/0x490\nWrite of size 4 at addr ffff8881178c9a00 by task test_progs/2231\nCall Trace:\n dump_stack_lvl+0x5d/0x80\n print_report+0x170/0x4f3\n kasan_report+0xe4/0x1c0\n kasan_check_range+0x125/0x200\n unix_stream_bpf_update_proto+0x155/0x490\n sock_map_link+0x71c/0xec0\n sock_map_update_common+0xbc/0x600\n sock_map_update_elem+0x19a/0x1f0\n bpf_prog_bbbf56096cdd4f01_selective_dump_unix+0x20c/0x217\n bpf_iter_run_prog+0x21e/0xae0\n bpf_iter_unix_seq_show+0x1e0/0x2a0\n bpf_seq_read+0x42c/0x10d0\n vfs_read+0x171/0xb20\n ksys_read+0xff/0x200\n do_syscall_64+0xf7/0x5e0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nAllocated by task 2236:\n kasan_save_stack+0x30/0x50\n kasan_save_track+0x14/0x30\n __kasan_slab_alloc+0x63/0x80\n kmem_cache_alloc_noprof+0x1d5/0x680\n sk_prot_alloc+0x59/0x210\n sk_alloc+0x34/0x470\n unix_create1+0x86/0x8a0\n unix_stream_connect+0x318/0x15b0\n __sys_connect+0xfd/0x130\n __x64_sys_connect+0x72/0xd0\n do_syscall_64+0xf7/0x5e0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFreed by task 2236:\n kasan_save_stack+0x30/0x50\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x70\n __kasan_slab_free+0x47/0x70\n kmem_cache_free+0x11c/0x590\n __sk_destruct+0x432/0x6e0\n unix_release_sock+0x9b3/0xf60\n unix_release+0x8a/0xf0\n __sock_release+0xb0/0x270\n sock_close+0x18/0x20\n __fput+0x36e/0xac0\n fput_close_sync+0xe5/0x1a0\n __x64_sys_close+0x7d/0xd0\n do_syscall_64+0xf7/0x5e0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e","published_at":"2026-06-24T16:29:40.794000Z","last_modified_at":null,"cvss_v3_score":7.8,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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/c6f4015eac2e3cbc3cb7a17539e10bbb5c2049c3","https://git.kernel.org/stable/c/d0d124dbcef9318e326956137b31671407094bd4","https://git.kernel.org/stable/c/1a59cc6b65fd3ad9915aae5970d859109d4ce9fb","https://git.kernel.org/stable/c/921920c34cb591947dd30c692500795a69f1e3fa","https://git.kernel.org/stable/c/98f744d204e5d6fca589cd2c44c3190a0c71697f","https://git.kernel.org/stable/c/64c2f93fc3254d3bf5de4445fb732ee5c451edb6"],"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":"2026-06-28T23:30:49.890169Z"},"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":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"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":"2c860a43dd77f969bb959336a2f743d7103a8f63","version_start_inclusive":true,"version_end":"c6f4015eac2e3cbc3cb7a17539e10bbb5c2049c3","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2c860a43dd77f969bb959336a2f743d7103a8f63:c6f4015eac2e3cbc3cb7a17539e10bbb5c2049c3"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2c860a43dd77f969bb959336a2f743d7103a8f63","version_start_inclusive":true,"version_end":"d0d124dbcef9318e326956137b31671407094bd4","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2c860a43dd77f969bb959336a2f743d7103a8f63:d0d124dbcef9318e326956137b31671407094bd4"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2c860a43dd77f969bb959336a2f743d7103a8f63","version_start_inclusive":true,"version_end":"1a59cc6b65fd3ad9915aae5970d859109d4ce9fb","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2c860a43dd77f969bb959336a2f743d7103a8f63:1a59cc6b65fd3ad9915aae5970d859109d4ce9fb"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2c860a43dd77f969bb959336a2f743d7103a8f63","version_start_inclusive":true,"version_end":"921920c34cb591947dd30c692500795a69f1e3fa","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2c860a43dd77f969bb959336a2f743d7103a8f63:921920c34cb591947dd30c692500795a69f1e3fa"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2c860a43dd77f969bb959336a2f743d7103a8f63","version_start_inclusive":true,"version_end":"98f744d204e5d6fca589cd2c44c3190a0c71697f","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2c860a43dd77f969bb959336a2f743d7103a8f63:98f744d204e5d6fca589cd2c44c3190a0c71697f"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2c860a43dd77f969bb959336a2f743d7103a8f63","version_start_inclusive":true,"version_end":"64c2f93fc3254d3bf5de4445fb732ee5c451edb6","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2c860a43dd77f969bb959336a2f743d7103a8f63:64c2f93fc3254d3bf5de4445fb732ee5c451edb6"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.15","version_start_inclusive":true,"version_end":"5.15","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.15:5.15"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"5.15","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:5.15"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.175","version_start_inclusive":true,"version_end":"6.1.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.1.175:6.1.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.141","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.141:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.91","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.91:6.12.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.33","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.33:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.10","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.10:7.0.*"},{"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/c6f4015eac2e3cbc3cb7a17539e10bbb5c2049c3","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/d0d124dbcef9318e326956137b31671407094bd4","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/1a59cc6b65fd3ad9915aae5970d859109d4ce9fb","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/921920c34cb591947dd30c692500795a69f1e3fa","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/98f744d204e5d6fca589cd2c44c3190a0c71697f","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/64c2f93fc3254d3bf5de4445fb732ee5c451edb6","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-24T16:29:40.794000Z","label":"CVE published","source":null}]}