{“lastseen”:””,”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-\\u003edata 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-\\u003edata:\\n\\n skb_store_bits(skb, sizeof(struct arphdr), info-\\u003emac, 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”:”2026-06-25T08:39:53.190Z”,”modified”:”2026-06-28T06:41:09.601Z”,”type”:”cve”,”title”:”netfilter: bridge: make ebt_snat ARP rewrite writable”,”source”:”Linux”,”references”:”https:\/\/git.kernel.org\/stable\/c\/bf84ad7c7a9ede46e31afaa41a1ba06a159e8c87\\nhttps:\/\/git.kernel.org\/stable\/c\/76280b78cc9f23bdc6438e10ad6dff148ef8375b\\nhttps:\/\/git.kernel.org\/stable\/c\/b7e91939ba9be805a62a257fa4e227dffbb88fa0\\nhttps:\/\/git.kernel.org\/stable\/c\/afd64b59c3de9bbbdd3759e834fdc55cda716e0b\\nhttps:\/\/git.kernel.org\/stable\/c\/153ea96c806aea395daba907a4f88480b6ad5093\\nhttps:\/\/git.kernel.org\/stable\/c\/b18675263db1147c8e1cab625400c13a0d87bd2d\\nhttps:\/\/git.kernel.org\/stable\/c\/c9b5ff59feffb92a147a84a5aa28acd2cb8ff4c5\\nhttps:\/\/git.kernel.org\/stable\/c\/67ba971ae02514d85818fe0c32549ab4bfa3bf49″,”id”:”CVE-2026-53266″,”bulletinFamily”:””,”cwe”:null,”cvelist”:null,”sourceData”:”Linux Linux 63137bc5882a1882c553d389fdeeeace86ee1741\\nLinux Linux 63137bc5882a1882c553d389fdeeeace86ee1741\\nLinux Linux 63137bc5882a1882c553d389fdeeeace86ee1741\\nLinux Linux 63137bc5882a1882c553d389fdeeeace86ee1741\\nLinux Linux 63137bc5882a1882c553d389fdeeeace86ee1741\\nLinux Linux 63137bc5882a1882c553d389fdeeeace86ee1741\\nLinux Linux 63137bc5882a1882c553d389fdeeeace86ee1741\\nLinux Linux 63137bc5882a1882c553d389fdeeeace86ee1741\\nLinux Linux 2f3839075a5f8dcf116c1abe35b36b018ac62445\\nLinux Linux 51ba2945a8ef65ae437c8f9ba05f0343aa82ae5b\\nLinux Linux b7d23c2c87584eb429f115c078ed511be8b18e29\\nLinux Linux 5.4.73\\nLinux Linux 5.8.17\\nLinux Linux 5.9.2\\nLinux Linux 5.10″,”sourceHref”:””,”cvss”:{“score”:8.8,”severity”:”HIGH”,”vector”:”CVSS:3.1\/AV:L\/AC:L\/PR:L\/UI:N\/S:C\/C:H\/I:H\/A:H”,”version”:”3.1″},”cvss2″:{},”cvss3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””,”cvssV3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””}},”href”:””,”category_name”:”CVE”,”post_link”:””,”product”:”Linux”,”version”:”63137bc5882a1882c553d389fdeeeace86ee1741″,”vendor”:”Linux”,”ai_description”:”AI processing failed – invalid JSON response”,”ai_severity”:””,”ai_vendor”:””,”ai_product”:””,”ai_version”:””,”ai_score”:0}<\/p>\n","protected":false},"excerpt":{"rendered":"
{“lastseen”:””,”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…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[6,8,41,12,15,13,7,11,5],"class_list":["post-66533","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-88","tag-exploit","tag-high","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"\n