{"id":79510,"date":"2026-06-09T15:41:15","date_gmt":"2026-06-09T12:11:15","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-46323-net-gro-dont-merge-zcopy-skbs\/"},"modified":"2026-06-09T15:41:15","modified_gmt":"2026-06-09T12:11:15","slug":"cve-2026-46323-net-gro-dont-merge-zcopy-skbs","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-46323-net-gro-dont-merge-zcopy-skbs\/","title":{"rendered":"CVE-2026-46323 &#8211; net: gro: don&#8217;t merge zcopy skbs"},"content":{"rendered":"<p>CVE ID :CVE-2026-46323<\/p>\n<p>  Published : June 9, 2026, 12:11 p.m. | 24\u00a0minutes ago<\/p>\n<p>  Description :In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net: gro: don&#8217;t merge zcopy skbs<\/p>\n<p>skb_gro_receive() can currently copy frags between the source and GRO<br \/>\nskb, without checking the zerocopy status, and in particular the<br \/>\nSKBFL_MANAGED_FRAG_REFS flag.<\/p>\n<p>When SKBFL_MANAGED_FRAG_REFS is set, the skb doesn&#8217;t hold a reference<br \/>\non the pages in shinfo-&gt;frags. Appending those frags to another skb&#8217;s<br \/>\nfrags without fixing up the page refcount can lead to UAF.<\/p>\n<p>When either the last skb in the GRO chain (the one we would append<br \/>\nfrags to) or the source skb is zerocopy, don&#8217;t merge the skbs.<\/p>\n<p>  Severity: 0.0 | NA<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-46323 Published : June 9, 2026, 12:11 p.m. | 24\u00a0minutes ago Description :In the Linux kernel, the following vulnerability has been resolved: net: gro: don&#8217;t merge zcopy skbs skb_gro_receive() can currently copy frags between the source and GRO skb, without checking the zerocopy status, and in particular the SKBFL_MANAGED_FRAG_REFS flag. When SKBFL_MANAGED_FRAG_REFS is &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-79510","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/79510","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=79510"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/79510\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=79510"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=79510"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=79510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}