{"cve":{"cve_id":"CVE-2026-46331","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":0.00291,"epss_percentile":0.20561,"epss_as_of":"2026-06-23","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: fix pedit partial COW leading to page cache corruption\n\ntcf_pedit_act() computes the COW range for skb_ensure_writable()\nonce before the key loop using tcfp_off_max_hint, but the hint does\nnot account for the runtime header offset added by typed keys. This\ncan leave part of the write region un-COW'd.\n\nFix by moving skb_ensure_writable() inside the per-key loop where\nthe actual write offset is known, and add overflow checking on the\noffset arithmetic. For negative offsets (e.g. Ethernet header edits\nat ingress), use skb_cow() to COW the headroom instead. Guard\noffset_valid() against INT_MIN, where negation is undefined.","published_at":"2026-06-16T06:26:21.066000Z","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/2bec122b9fb91507a758ab5e3e5c4fbe7cb3f61b","https://git.kernel.org/stable/c/b198ed4e52580a7238c7c7082f03906f8b310313","https://git.kernel.org/stable/c/3dee9d0c198faeb95d052c1b94c2958751a28512","https://git.kernel.org/stable/c/899ee91156e57784090c5565e4f31bd7dbffbc5a"],"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":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:30:37.146260Z"},"effective_severity":"HIGH","badges":["news"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack 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Hacker News","url":"https://thehackernews.com/2026/06/new-linux-pedit-cow-exploit-enables.html","title":"New Linux pedit COW Exploit Enables Root Access by Poisoning Cached Binaries","summary":"A flaw in the Linux kernel's traffic-control subsystem can let a local unprivileged user gain root on affected systems.\n\nCVE-2026-46331, nicknamed \"pedit COW,\" is an out-of-bounds write in the packet-editing action (act_pedit) that corrupts shared page-cache memory. A public, working exploit appeared within a day of the CVE assignment on June 16. Red Hat rates the flaw as","thumbnail_url":"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBWN46D03nuGH8FWFxZD7Ax6T3Wvmf5bt3WrqjghU6ZJU65L6pfoPjt2fVw4-dGXfyEx8fkygfYUftIDlMpPaRcegTEH6eL58nSyiFvbbg5A0GxtFTIhwQUIj16DF-vIqiH2B6jnC7C3DebkJja3v6ayIjOF-eY5DoDL9qef319S3m4ny2lnodtc1WeE59/s1600/linux-cow.jpg","author":"info@thehackernews.com (The Hacker News)","published_at":"2026-06-26T13:57:55Z","fetched_at":"2026-06-29T03:15:31.417532Z","trending_score":null,"cve_ids":["CVE-2026-46331"]}],"references":[{"url":"https://git.kernel.org/stable/c/2bec122b9fb91507a758ab5e3e5c4fbe7cb3f61b","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/b198ed4e52580a7238c7c7082f03906f8b310313","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/3dee9d0c198faeb95d052c1b94c2958751a28512","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/899ee91156e57784090c5565e4f31bd7dbffbc5a","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-16T06:26:21.066000Z","label":"CVE published","source":null},{"type":"first_article","at":"2026-06-26T13:57:55Z","label":"First news coverage","source":"The Hacker News"},{"type":"cvss_changed","at":"2026-06-28T17:54:49.174395Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:49.174395Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:49.174395Z","label":"CVSS score revised","source":"cvelistv5"}]}