{"id":"USN-8305-2","summary":"linux-lowlatency-hwe-5.15 vulnerabilities","details":"It 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  - Ethernet bonding driver;\n  - Packet sockets;\n  - TLS protocol;\n(CVE-2026-31419, CVE-2026-31504, CVE-2026-31533, CVE-2026-43033,\nCVE-2026-43077, CVE-2026-43078)\n","modified":"2026-06-03T13:50:09.684961438Z","published":"2026-05-26T19:08:48Z","related":["UBUNTU-CVE-2026-31419","UBUNTU-CVE-2026-31431","UBUNTU-CVE-2026-31504","UBUNTU-CVE-2026-31533","UBUNTU-CVE-2026-43033","UBUNTU-CVE-2026-43077","UBUNTU-CVE-2026-43078"],"upstream":["CVE-2026-31419","CVE-2026-31431","CVE-2026-31504","CVE-2026-31533","CVE-2026-43033","CVE-2026-43077","CVE-2026-43078","UBUNTU-CVE-2026-31419","UBUNTU-CVE-2026-31431","UBUNTU-CVE-2026-31504","UBUNTU-CVE-2026-31533","UBUNTU-CVE-2026-43033","UBUNTU-CVE-2026-43077","UBUNTU-CVE-2026-43078"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8305-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31419"},{"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-2026-31533"},{"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-lowlatency-hwe-5.15","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/linux-lowlatency-hwe-5.15?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-179.189~20.04.1"}]}],"versions":["5.15.0-33.34~20.04.1","5.15.0-42.45~20.04.1","5.15.0-43.46~20.04.1","5.15.0-46.49~20.04.1","5.15.0-48.54~20.04.1","5.15.0-50.56~20.04.1","5.15.0-52.58~20.04.1","5.15.0-53.59~20.04.1","5.15.0-56.62~20.04.1","5.15.0-58.64~20.04.1","5.15.0-60.66~20.04.1","5.15.0-67.74~20.04.1","5.15.0-69.76~20.04.1","5.15.0-70.77~20.04.1","5.15.0-71.78~20.04.1","5.15.0-72.79~20.04.1","5.15.0-73.80~20.04.1","5.15.0-75.82~20.04.1","5.15.0-76.83~20.04.1","5.15.0-78.85~20.04.1","5.15.0-79.88~20.04.1","5.15.0-82.91~20.04.1","5.15.0-83.92~20.04.1","5.15.0-84.93~20.04.1","5.15.0-86.95~20.04.1","5.15.0-87.96~20.04.1","5.15.0-88.98~20.04.1","5.15.0-89.99~20.04.1","5.15.0-91.101~20.04.1","5.15.0-92.102~20.04.1","5.15.0-94.104~20.04.1","5.15.0-97.107~20.04.1","5.15.0-100.110~20.04.1","5.15.0-101.111~20.04.1","5.15.0-102.112~20.04.1","5.15.0-105.115~20.04.1","5.15.0-106.116~20.04.1","5.15.0-107.117~20.04.1","5.15.0-110.120~20.04.1","5.15.0-113.123~20.04.1","5.15.0-116.126~20.04.1","5.15.0-117.127~20.04.1","5.15.0-118.128~20.04.1","5.15.0-119.129~20.04.1","5.15.0-121.131~20.04.1","5.15.0-122.132~20.04.1","5.15.0-124.134~20.04.1","5.15.0-125.135~20.04.1","5.15.0-126.136~20.04.1","5.15.0-127.137~20.04.1","5.15.0-128.138~20.04.1","5.15.0-129.139~20.04.1","5.15.0-131.141~20.04.1","5.15.0-133.143~20.04.1","5.15.0-134.145~20.04.1","5.15.0-135.146~20.04.1","5.15.0-136.147~20.04.1","5.15.0-138.148~20.04.1","5.15.0-139.149~20.04.1","5.15.0-140.150~20.04.1","5.15.0-142.152~20.04.1","5.15.0-143.153~20.04.1","5.15.0-144.157~20.04.1","5.15.0-145.158~20.04.1","5.15.0-152.162~20.04.1","5.15.0-153.163~20.04.1","5.15.0-156.166~20.04.1","5.15.0-157.167~20.04.1","5.15.0-160.170~20.04.1","5.15.0-161.171~20.04.1","5.15.0-163.173~20.04.1","5.15.0-164.174~20.04.1","5.15.0-168.178~20.04.1","5.15.0-170.180~20.04.1","5.15.0-171.181~20.04.1","5.15.0-173.183~20.04.1","5.15.0-174.184~20.04.1","5.15.0-175.185~20.04.1","5.15.0-177.187~20.04.1","5.15.0-178.188~20.04.1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"5.15.0-179.189~20.04.1","binary_name":"linux-buildinfo-5.15.0-179-lowlatency"},{"binary_version":"5.15.0-179.189~20.04.1","binary_name":"linux-buildinfo-5.15.0-179-lowlatency-64k"},{"binary_version":"5.15.0-179.189~20.04.1","binary_name":"linux-cloud-tools-5.15.0-179-lowlatency"},{"binary_version":"5.15.0-179.189~20.04.1","binary_name":"linux-headers-5.15.0-179-lowlatency"},{"binary_name":"linux-headers-5.15.0-179-lowlatency-64k","binary_version":"5.15.0-179.189~20.04.1"},{"binary_name":"linux-image-unsigned-5.15.0-179-lowlatency","binary_version":"5.15.0-179.189~20.04.1"},{"binary_version":"5.15.0-179.189~20.04.1","binary_name":"linux-image-unsigned-5.15.0-179-lowlatency-64k"},{"binary_version":"5.15.0-179.189~20.04.1","binary_name":"linux-lowlatency-hwe-5.15-cloud-tools-5.15.0-179"},{"binary_version":"5.15.0-179.189~20.04.1","binary_name":"linux-lowlatency-hwe-5.15-headers-5.15.0-179"},{"binary_version":"5.15.0-179.189~20.04.1","binary_name":"linux-lowlatency-hwe-5.15-tools-5.15.0-179"},{"binary_name":"linux-modules-5.15.0-179-lowlatency","binary_version":"5.15.0-179.189~20.04.1"},{"binary_version":"5.15.0-179.189~20.04.1","binary_name":"linux-modules-5.15.0-179-lowlatency-64k"},{"binary_name":"linux-modules-iwlwifi-5.15.0-179-lowlatency","binary_version":"5.15.0-179.189~20.04.1"},{"binary_name":"linux-tools-5.15.0-179-lowlatency","binary_version":"5.15.0-179.189~20.04.1"},{"binary_version":"5.15.0-179.189~20.04.1","binary_name":"linux-tools-5.15.0-179-lowlatency-64k"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8305-2.json","cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"id":"CVE-2026-31419","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-31431","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]},{"id":"CVE-2026-31504","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-31533","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-43033","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-43077","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-43078","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]}}}],"schema_version":"1.7.5"}