{"id":"USN-8281-1","summary":"linux, linux-aws, linux-aws-fips, linux-fips, linux-gcp-4.15, linux-gcp-fips, linux-kvm, linux-oracle vulnerabilities","details":"\nIt was discovered that the Linux kernel algif_aead module did not properly\nhandle in-place cryptographic operations. This flaw is known as Copy Fail.\nA local attacker could use this to escalate privileges, or possibly escape\na container. (CVE-2026-31431)\n\nSeveral security issues were discovered in the Linux kernel.\nAn attacker could possibly use these to compromise the system.\nThis update corrects flaws in the following subsystems:\n  - Cryptographic API;\n  - Packet sockets;\n(CVE-2026-31504, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078)\n","modified":"2026-05-21T19:45:08.948882745Z","published":"2026-05-19T22:56:00Z","related":["UBUNTU-CVE-2026-31431","UBUNTU-CVE-2026-31504","UBUNTU-CVE-2026-43033","UBUNTU-CVE-2026-43077","UBUNTU-CVE-2026-43078"],"upstream":["UBUNTU-CVE-2026-31431","UBUNTU-CVE-2026-31504","UBUNTU-CVE-2026-43033","UBUNTU-CVE-2026-43077","UBUNTU-CVE-2026-43078"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8281-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31431"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31504"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43033"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43077"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43078"}],"affected":[{"package":{"name":"linux","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/linux?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15.0-250.262"}]}],"versions":["4.13.0-16.19","4.13.0-17.20","4.13.0-25.29","4.13.0-32.35","4.15.0-10.11","4.15.0-12.13","4.15.0-13.14","4.15.0-15.16","4.15.0-19.20","4.15.0-20.21","4.15.0-22.24","4.15.0-23.25","4.15.0-24.26","4.15.0-29.31","4.15.0-30.32","4.15.0-32.35","4.15.0-33.36","4.15.0-34.37","4.15.0-36.39","4.15.0-38.41","4.15.0-39.42","4.15.0-42.45","4.15.0-43.46","4.15.0-44.47","4.15.0-45.48","4.15.0-46.49","4.15.0-47.50","4.15.0-48.51","4.15.0-50.54","4.15.0-51.55","4.15.0-52.56","4.15.0-54.58","4.15.0-55.60","4.15.0-58.64","4.15.0-60.67","4.15.0-62.69","4.15.0-64.73","4.15.0-65.74","4.15.0-66.75","4.15.0-69.78","4.15.0-70.79","4.15.0-72.81","4.15.0-74.84","4.15.0-76.86","4.15.0-88.88","4.15.0-91.92","4.15.0-96.97","4.15.0-99.100","4.15.0-101.102","4.15.0-106.107","4.15.0-108.109","4.15.0-109.110","4.15.0-111.112","4.15.0-112.113","4.15.0-115.116","4.15.0-117.118","4.15.0-118.119","4.15.0-121.123","4.15.0-122.124","4.15.0-123.126","4.15.0-124.127","4.15.0-126.129","4.15.0-128.131","4.15.0-129.132","4.15.0-130.134","4.15.0-132.136","4.15.0-134.138","4.15.0-135.139","4.15.0-136.140","4.15.0-137.141","4.15.0-139.143","4.15.0-140.144","4.15.0-141.145","4.15.0-142.146","4.15.0-143.147","4.15.0-144.148","4.15.0-147.151","4.15.0-151.157","4.15.0-153.160","4.15.0-154.161","4.15.0-156.163","4.15.0-158.166","4.15.0-159.167","4.15.0-161.169","4.15.0-162.170","4.15.0-163.171","4.15.0-166.174","4.15.0-167.175","4.15.0-169.177","4.15.0-171.180","4.15.0-173.182","4.15.0-175.184","4.15.0-176.185","4.15.0-177.186","4.15.0-180.189","4.15.0-184.194","4.15.0-187.198","4.15.0-188.199","4.15.0-189.200","4.15.0-191.202","4.15.0-192.203","4.15.0-193.204","4.15.0-194.205","4.15.0-196.207","4.15.0-197.208","4.15.0-200.211","4.15.0-201.212","4.15.0-202.213","4.15.0-204.215","4.15.0-206.217","4.15.0-208.220","4.15.0-209.220","4.15.0-210.221","4.15.0-211.222","4.15.0-212.223","4.15.0-213.224","4.15.0-214.225","4.15.0-216.227","4.15.0-218.229","4.15.0-219.230","4.15.0-220.231","4.15.0-221.232","4.15.0-222.233","4.15.0-223.235","4.15.0-224.236","4.15.0-225.237","4.15.0-226.238","4.15.0-227.239","4.15.0-228.240","4.15.0-229.241","4.15.0-230.242","4.15.0-231.243","4.15.0-232.244","4.15.0-233.245","4.15.0-234.246","4.15.0-235.247","4.15.0-236.248","4.15.0-237.249","4.15.0-238.250","4.15.0-239.251","4.15.0-240.252","4.15.0-241.253","4.15.0-242.254","4.15.0-243.255","4.15.0-245.257","4.15.0-246.258","4.15.0-247.259","4.15.0-248.260","4.15.0-249.261"],"ecosystem_specific":{"binaries":[{"binary_name":"block-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"crypto-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"dasd-extra-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"dasd-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"fat-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"fb-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"firewire-core-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"floppy-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"fs-core-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"fs-secondary-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"input-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"ipmi-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"irda-modules-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"kernel-image-4.15.0-250-generic-di","binary_version":"4.15.0-250.262"},{"binary_name":"linux-buildinfo-4.15.0-250-generic","binary_version":"4.15.0-250.262"},{"binary_name":"linux-buildinfo-4.15.0-250-lowlatency","binary_version":"4.15.0-250.262"},{"binary_name":"linux-cloud-tools-4.15.0-250","binary_version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with Ubuntu Pro (Infra-only): 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