{"cve":{"cve_id":"CVE-2026-53266","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\nnetfilter: bridge: make ebt_snat ARP rewrite writable\n\nThe ebtables SNAT target keeps the Ethernet source address rewrite\nbehind skb_ensure_writable(skb, 0).  This is intentional: at the bridge\nebtables hooks the Ethernet header is addressed through\nskb_mac_header()/eth_hdr(), while skb->data points at the Ethernet\npayload.  Asking skb_ensure_writable() for ETH_HLEN bytes would check\nthe payload, not the Ethernet header, and would reintroduce the small\npacket regression fixed by commit 63137bc5882a.\n\nHowever, the optional ARP sender hardware address rewrite is different.\nIt writes through skb_store_bits() at an offset relative to skb->data:\n\n        skb_store_bits(skb, sizeof(struct arphdr), info->mac, ETH_ALEN)\n\nskb_header_pointer() only safely reads the ARP header; it does not make\nthe later sender hardware address range writable.  If that range is\nstill held in a nonlinear skb fragment backed by a splice-imported file\npage, skb_store_bits() maps the frag page and copies the new MAC address\ndirectly into it.\n\nEnsure the ARP SHA range is writable before reading the ARP header and\nbefore calling skb_store_bits().","published_at":"2026-06-25T08:39:53.190000Z","last_modified_at":null,"cvss_v3_score":8.8,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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/bf84ad7c7a9ede46e31afaa41a1ba06a159e8c87","https://git.kernel.org/stable/c/76280b78cc9f23bdc6438e10ad6dff148ef8375b","https://git.kernel.org/stable/c/b7e91939ba9be805a62a257fa4e227dffbb88fa0","https://git.kernel.org/stable/c/afd64b59c3de9bbbdd3759e834fdc55cda716e0b","https://git.kernel.org/stable/c/153ea96c806aea395daba907a4f88480b6ad5093","https://git.kernel.org/stable/c/b18675263db1147c8e1cab625400c13a0d87bd2d","https://git.kernel.org/stable/c/c9b5ff59feffb92a147a84a5aa28acd2cb8ff4c5","https://git.kernel.org/stable/c/67ba971ae02514d85818fe0c32549ab4bfa3bf49"],"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":"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":"63137bc5882a1882c553d389fdeeeace86ee1741","version_start_inclusive":true,"version_end":"bf84ad7c7a9ede46e31afaa41a1ba06a159e8c87","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:63137bc5882a1882c553d389fdeeeace86ee1741:bf84ad7c7a9ede46e31afaa41a1ba06a159e8c87"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"63137bc5882a1882c553d389fdeeeace86ee1741","version_start_inclusive":true,"version_end":"76280b78cc9f23bdc6438e10ad6dff148ef8375b","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:63137bc5882a1882c553d389fdeeeace86ee1741:76280b78cc9f23bdc6438e10ad6dff148ef8375b"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"63137bc5882a1882c553d389fdeeeace86ee1741","version_start_inclusive":true,"version_end":"b7e91939ba9be805a62a257fa4e227dffbb88fa0","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:63137bc5882a1882c553d389fdeeeace86ee1741:b7e91939ba9be805a62a257fa4e227dffbb88fa0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"63137bc5882a1882c553d389fdeeeace86ee1741","version_start_inclusive":true,"version_end":"afd64b59c3de9bbbdd3759e834fdc55cda716e0b","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:63137bc5882a1882c553d389fdeeeace86ee1741:afd64b59c3de9bbbdd3759e834fdc55cda716e0b"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"63137bc5882a1882c553d389fdeeeace86ee1741","version_start_inclusive":true,"version_end":"153ea96c806aea395daba907a4f88480b6ad5093","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:63137bc5882a1882c553d389fdeeeace86ee1741:153ea96c806aea395daba907a4f88480b6ad5093"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"63137bc5882a1882c553d389fdeeeace86ee1741","version_start_inclusive":true,"version_end":"b18675263db1147c8e1cab625400c13a0d87bd2d","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:63137bc5882a1882c553d389fdeeeace86ee1741:b18675263db1147c8e1cab625400c13a0d87bd2d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"63137bc5882a1882c553d389fdeeeace86ee1741","version_start_inclusive":true,"version_end":"c9b5ff59feffb92a147a84a5aa28acd2cb8ff4c5","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:63137bc5882a1882c553d389fdeeeace86ee1741:c9b5ff59feffb92a147a84a5aa28acd2cb8ff4c5"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"63137bc5882a1882c553d389fdeeeace86ee1741","version_start_inclusive":true,"version_end":"67ba971ae02514d85818fe0c32549ab4bfa3bf49","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:63137bc5882a1882c553d389fdeeeace86ee1741:67ba971ae02514d85818fe0c32549ab4bfa3bf49"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2f3839075a5f8dcf116c1abe35b36b018ac62445","version_start_inclusive":true,"version_end":"2f3839075a5f8dcf116c1abe35b36b018ac62445","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:2f3839075a5f8dcf116c1abe35b36b018ac62445:2f3839075a5f8dcf116c1abe35b36b018ac62445"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"51ba2945a8ef65ae437c8f9ba05f0343aa82ae5b","version_start_inclusive":true,"version_end":"51ba2945a8ef65ae437c8f9ba05f0343aa82ae5b","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:51ba2945a8ef65ae437c8f9ba05f0343aa82ae5b:51ba2945a8ef65ae437c8f9ba05f0343aa82ae5b"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"b7d23c2c87584eb429f115c078ed511be8b18e29","version_start_inclusive":true,"version_end":"b7d23c2c87584eb429f115c078ed511be8b18e29","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:b7d23c2c87584eb429f115c078ed511be8b18e29:b7d23c2c87584eb429f115c078ed511be8b18e29"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.4.73","version_start_inclusive":true,"version_end":"5.5","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5.4.73:5.5"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.8.17","version_start_inclusive":true,"version_end":"5.9","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5.8.17:5.9"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.9.2","version_start_inclusive":true,"version_end":"5.10","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5.9.2:5.10"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.10","version_start_inclusive":true,"version_end":"5.10","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.10:5.10"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"5.10","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:5.10"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.10.259","version_start_inclusive":true,"version_end":"5.10.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.10.259:5.10.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.15.210","version_start_inclusive":true,"version_end":"5.15.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.15.210:5.15.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.176","version_start_inclusive":true,"version_end":"6.1.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.1.176:6.1.*"},{"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/bf84ad7c7a9ede46e31afaa41a1ba06a159e8c87","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/76280b78cc9f23bdc6438e10ad6dff148ef8375b","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/b7e91939ba9be805a62a257fa4e227dffbb88fa0","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/afd64b59c3de9bbbdd3759e834fdc55cda716e0b","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/153ea96c806aea395daba907a4f88480b6ad5093","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/b18675263db1147c8e1cab625400c13a0d87bd2d","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/c9b5ff59feffb92a147a84a5aa28acd2cb8ff4c5","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/67ba971ae02514d85818fe0c32549ab4bfa3bf49","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:39:53.190000Z","label":"CVE published","source":null}]}