{"id":"USN-8661-2","summary":"linux-lowlatency vulnerabilities","details":"Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi\nimplementation in the Linux kernel did not properly handle aggregated\nframes in mesh networks, due to an incorrect fix for CVE-2020-24588. A\nphysically proximate attacker could use this issue to inject packets.\n(CVE-2025-27558)\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  - x86 architecture;\n  - InfiniBand drivers;\n  - Network drivers;\n  - NVME drivers;\n  - Ext4 file system;\n  - SMB network file system;\n  - IPv4 networking;\n  - Network traffic control;\n  - TCP network protocol;\n  - Locking primitives;\n  - IPv6 networking;\n  - Multipath TCP;\n  - Netfilter;\n  - Open vSwitch;\n  - SCTP protocol;\n  - SMC sockets;\n(CVE-2026-31414, CVE-2026-31448, CVE-2026-31705, CVE-2026-43198,\nCVE-2026-43378, CVE-2026-43499, CVE-2026-46266, CVE-2026-46331,\nCVE-2026-52924, CVE-2026-52989, CVE-2026-53086, CVE-2026-53176,\nCVE-2026-53212, CVE-2026-53215, CVE-2026-53224, CVE-2026-53225,\nCVE-2026-53228, CVE-2026-53246, CVE-2026-53359, CVE-2026-64531)\n","modified":"2026-08-24T10:54:42.182868493Z","published":"2026-08-21T21:58:55Z","related":["UBUNTU-CVE-2025-27558","UBUNTU-CVE-2026-31414","UBUNTU-CVE-2026-31448","UBUNTU-CVE-2026-31705","UBUNTU-CVE-2026-43198","UBUNTU-CVE-2026-43378","UBUNTU-CVE-2026-43499","UBUNTU-CVE-2026-46266","UBUNTU-CVE-2026-46331","UBUNTU-CVE-2026-52924","UBUNTU-CVE-2026-52989","UBUNTU-CVE-2026-53086","UBUNTU-CVE-2026-53176","UBUNTU-CVE-2026-53212","UBUNTU-CVE-2026-53215","UBUNTU-CVE-2026-53224","UBUNTU-CVE-2026-53225","UBUNTU-CVE-2026-53228","UBUNTU-CVE-2026-53246","UBUNTU-CVE-2026-53359","UBUNTU-CVE-2026-64531"],"upstream":["UBUNTU-CVE-2025-27558","UBUNTU-CVE-2026-31414","UBUNTU-CVE-2026-31448","UBUNTU-CVE-2026-31705","UBUNTU-CVE-2026-43198","UBUNTU-CVE-2026-43378","UBUNTU-CVE-2026-43499","UBUNTU-CVE-2026-46266","UBUNTU-CVE-2026-46331","UBUNTU-CVE-2026-52924","UBUNTU-CVE-2026-52989","UBUNTU-CVE-2026-53086","UBUNTU-CVE-2026-53176","UBUNTU-CVE-2026-53212","UBUNTU-CVE-2026-53215","UBUNTU-CVE-2026-53224","UBUNTU-CVE-2026-53225","UBUNTU-CVE-2026-53228","UBUNTU-CVE-2026-53246","UBUNTU-CVE-2026-53359","UBUNTU-CVE-2026-64531"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8661-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-27558"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31414"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31448"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31705"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43198"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43378"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43499"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-46266"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-46331"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-52924"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-52989"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53086"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53176"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53212"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53215"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53224"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53225"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53228"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53246"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53359"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-64531"}],"affected":[{"package":{"name":"linux-lowlatency","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/linux-lowlatency?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-190.200"}]}],"versions":["5.15.0-22.22","5.15.0-23.23","5.15.0-24.24","5.15.0-27.28","5.15.0-30.31","5.15.0-33.34","5.15.0-35.36","5.15.0-37.39","5.15.0-39.42","5.15.0-40.43","5.15.0-41.44","5.15.0-43.46","5.15.0-46.49","5.15.0-47.53","5.15.0-48.54","5.15.0-50.56","5.15.0-52.58","5.15.0-53.59","5.15.0-56.62","5.15.0-57.63","5.15.0-58.64","5.15.0-60.66","5.15.0-67.74","5.15.0-69.76","5.15.0-70.77","5.15.0-71.78","5.15.0-72.79","5.15.0-73.80","5.15.0-75.82","5.15.0-76.83","5.15.0-78.85","5.15.0-79.88","5.15.0-82.91","5.15.0-83.92","5.15.0-84.93","5.15.0-86.95","5.15.0-87.96","5.15.0-88.98","5.15.0-89.99","5.15.0-91.101","5.15.0-92.102","5.15.0-94.104","5.15.0-97.107","5.15.0-100.110","5.15.0-101.111","5.15.0-102.112","5.15.0-105.115","5.15.0-106.116","5.15.0-107.117","5.15.0-110.120","5.15.0-113.123","5.15.0-116.126","5.15.0-117.127","5.15.0-118.128","5.15.0-119.129","5.15.0-121.131","5.15.0-122.132","5.15.0-124.134","5.15.0-125.135","5.15.0-126.136","5.15.0-127.137","5.15.0-128.138","5.15.0-129.139","5.15.0-131.141","5.15.0-133.143","5.15.0-134.145","5.15.0-135.146","5.15.0-136.147","5.15.0-138.148","5.15.0-139.149","5.15.0-140.150","5.15.0-141.151","5.15.0-142.152","5.15.0-143.153","5.15.0-144.157","5.15.0-145.158","5.15.0-152.162","5.15.0-153.163","5.15.0-156.166","5.15.0-157.167","5.15.0-160.170","5.15.0-161.171","5.15.0-163.173","5.15.0-164.174","5.15.0-168.178","5.15.0-170.180","5.15.0-171.181","5.15.0-173.183","5.15.0-174.184","5.15.0-175.185","5.15.0-177.187","5.15.0-178.188","5.15.0-179.189","5.15.0-181.191","5.15.0-183.193","5.15.0-184.194"],"ecosystem_specific":{"binaries":[{"binary_version":"5.15.0-190.200","binary_name":"linux-buildinfo-5.15.0-190-lowlatency"},{"binary_version":"5.15.0-190.200","binary_name":"linux-buildinfo-5.15.0-190-lowlatency-64k"},{"binary_name":"linux-cloud-tools-5.15.0-190-lowlatency","binary_version":"5.15.0-190.200"},{"binary_name":"linux-headers-5.15.0-190-lowlatency","binary_version":"5.15.0-190.200"},{"binary_version":"5.15.0-190.200","binary_name":"linux-headers-5.15.0-190-lowlatency-64k"},{"binary_name":"linux-image-unsigned-5.1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subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2025-27558","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-31414","severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2026-31448","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2026-31705","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]},{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}],"id":"CVE-2026-43198"},{"id":"CVE-2026-43378","severity":[{"score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"high","type":"Ubuntu"}]},{"id":"CVE-2026-43499","severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"score":"high","type":"Ubuntu"}]},{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-46266"},{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},{"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-2026-46331"},{"id":"CVE-2026-52924","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2026-52989","severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"critical"}]},{"id":"CVE-2026-53086","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2026-53176","severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"high","type":"Ubuntu"}]},{"id":"CVE-2026-53212","severity":[{"score":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"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-2026-53215","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"critical"}]},{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"},{"type":"Ubuntu","score":"high"}],"id":"CVE-2026-53224"},{"id":"CVE-2026-53225","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","type":"CVSS_V3"},{"score":"negligible","type":"Ubuntu"}]},{"id":"CVE-2026-53228","severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-53246","severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-53359","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2026-64531","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8661-2.json"}}],"schema_version":"1.9.0"}