{"id":80623,"date":"2026-06-16T11:46:23","date_gmt":"2026-06-16T08:16:23","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-46331-net-sched-fix-pedit-partial-cow-leading-to-page-cache-corruption\/"},"modified":"2026-06-16T11:46:23","modified_gmt":"2026-06-16T08:16:23","slug":"cve-2026-46331-net-sched-fix-pedit-partial-cow-leading-to-page-cache-corruption","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-46331-net-sched-fix-pedit-partial-cow-leading-to-page-cache-corruption\/","title":{"rendered":"CVE-2026-46331 &#8211; net\/sched: fix pedit partial COW leading to page cache corruption"},"content":{"rendered":"<p>CVE ID :CVE-2026-46331<\/p>\n<p>  Published : June 16, 2026, 8:16 a.m. | 1\u00a0hour, 25\u00a0minutes ago<\/p>\n<p>  Description :In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net\/sched: fix pedit partial COW leading to page cache corruption<\/p>\n<p>tcf_pedit_act() computes the COW range for skb_ensure_writable()<br \/>\nonce before the key loop using tcfp_off_max_hint, but the hint does<br \/>\nnot account for the runtime header offset added by typed keys. This<br \/>\ncan leave part of the write region un-COW&#8217;d.<\/p>\n<p>Fix by moving skb_ensure_writable() inside the per-key loop where<br \/>\nthe actual write offset is known, and add overflow checking on the<br \/>\noffset arithmetic. For negative offsets (e.g. Ethernet header edits<br \/>\nat ingress), use skb_cow() to COW the headroom instead. Guard<br \/>\noffset_valid() against INT_MIN, where negation is undefined.<\/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-2026-46331 Published : June 16, 2026, 8:16 a.m. | 1\u00a0hour, 25\u00a0minutes ago Description :In the Linux kernel, the following vulnerability has been resolved: net\/sched: fix pedit partial COW leading to page cache corruption tcf_pedit_act() computes the COW range for skb_ensure_writable() once before the key loop using tcfp_off_max_hint, but the hint does not account &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-80623","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/80623","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=80623"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/80623\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=80623"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=80623"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=80623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}