{"vulnerability": "CVE-2026-81000", "sightings": [{"uuid": "c4dd37dd-d896-4cd7-936c-d1e54a00ac4f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-81000", "type": "seen", "source": "https://infosec.exchange/users/offseq/statuses/117255479208869871", "content": "CVE-2026-81000: Linux kernel TUN driver HIGH severity vulnerability fixed. Flaw in skb headroom calculation could trigger memory corruption. Update to patched kernel ASAP. \ud83d\udc27 https://radar.offseq.com/threat/in-the-linux-kernel-the-following-vulnerability-has-been-resolved-net-tun-bound-receive-headroom-683cedae073ef3c4 #OffSeq #Linux #Vulnerability #BlueTeam", "creation_timestamp": "2026-09-12T01:30:24.363245Z"}, {"uuid": "e4fb727c-f52f-4c31-bc9e-f963dfa6289b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-81000", "type": "seen", "source": "https://bsky.app/profile/offseq.bsky.social/post/3mvbwmmuy522h", "content": "Linux kernel TUN driver HIGH severity vuln (CVE-2026-81000) now fixed. Issue could cause memory corruption via skb buffer misplacement. Update to patched kernel. \ud83d\udee1\ufe0f https://radar.offseq.com/threat/in-the-linux-kernel-the-following-vulnerability-has-been-resolved-net-tun-bound-receive-headroom-683...", "creation_timestamp": "2026-09-12T01:30:26.830701Z"}]}