{"schemaVersion":3,"id":"USN-8666-2","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux-azure-5.4, linux-azure-fips vulnerabilities\n\nSiebe 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  - Cryptographic API;\n  - InfiniBand drivers;\n  - Media drivers;\n  - NVIDIA Tegra memory controller driver;\n  - Network drivers;\n  - NVME drivers;\n  - File systems infrastructure;\n  - Ext4 file system;\n  - IPv4 networking;\n  - Network traffic control;\n  - TCP network protocol;\n  - Locking primitives;\n  - B.A.T.M.A.N. meshing protocol;\n  - Ceph Core library;\n  - IPv6 networking;\n  - Multipath TCP;\n  - Netfilter;\n  - SCTP protocol;\n  - SMC sockets;\n  - TIPC protocol;\n(CVE-2021-47378, CVE-2026-23392, CVE-2026-31405, CVE-2026-31414,\nCVE-2026-31448, CVE-2026-31657, CVE-2026-31668, CVE-2026-43071,\nCVE-2026-43198, CVE-2026-43493, CVE-2026-43499, CVE-2026-46266,\nCVE-2026-46331, CVE-2026-52914, CVE-2026-52924, CVE-2026-52931,\nCVE-2026-52955, CVE-2026-52958, CVE-2026-52982, CVE-2026-52986,\nCVE-2026-52989, CVE-2026-52993, CVE-2026-52999, CVE-2026-53002,\nCVE-2026-53006, CVE-2026-53045, CVE-2026-53088, CVE-2026-53176,\nCVE-2026-53212, CVE-2026-53228, CVE-2026-53359)","dates":{"published":"2026-08-25T21:15:06.000Z","modified":"2026-09-11T15:00:52.538Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"linux-azure-5.4","name":"linux-azure-5.4","label":"linux-azure-5.4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-azure-5.4","purlType":"deb","versions":[{"text":"< 5.4.0-1167.173~18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1167.173~18.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"linux-azure-fips","name":"linux-azure-fips","label":"linux-azure-fips","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-azure-fips","purlType":"deb","versions":[{"text":"< 5.4.0-1167.173+fips1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.4.0-1167.173+fips1","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8666-2","label":"ubuntu.com/security/notices/USN-8666-2","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-47378","label":"ubuntu.com/security/CVE-2021-47378","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-27558","label":"ubuntu.com/security/CVE-2025-27558","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-23392","label":"ubuntu.com/security/CVE-2026-23392","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-31405","label":"ubuntu.com/security/CVE-2026-31405","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-31414","label":"ubuntu.com/security/CVE-2026-31414","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-31448","label":"ubuntu.com/security/CVE-2026-31448","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-31657","label":"ubuntu.com/security/CVE-2026-31657","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-31668","label":"ubuntu.com/security/CVE-2026-31668","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-43071","label":"ubuntu.com/security/CVE-2026-43071","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-43198","label":"ubuntu.com/security/CVE-2026-43198","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-43493","label":"ubuntu.com/security/CVE-2026-43493","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-43499","label":"ubuntu.com/security/CVE-2026-43499","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-46266","label":"ubuntu.com/security/CVE-2026-46266","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-46331","label":"ubuntu.com/security/CVE-2026-46331","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-52914","label":"ubuntu.com/security/CVE-2026-52914","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-52924","label":"ubuntu.com/security/CVE-2026-52924","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-52931","label":"ubuntu.com/security/CVE-2026-52931","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-52955","label":"ubuntu.com/security/CVE-2026-52955","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-52958","label":"ubuntu.com/security/CVE-2026-52958","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-52982","label":"ubuntu.com/security/CVE-2026-52982","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-52986","label":"ubuntu.com/security/CVE-2026-52986","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-52989","label":"ubuntu.com/security/CVE-2026-52989","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-52993","label":"ubuntu.com/security/CVE-2026-52993","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-52999","label":"ubuntu.com/security/CVE-2026-52999","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53002","label":"ubuntu.com/security/CVE-2026-53002","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53006","label":"ubuntu.com/security/CVE-2026-53006","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53045","label":"ubuntu.com/security/CVE-2026-53045","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53088","label":"ubuntu.com/security/CVE-2026-53088","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53176","label":"ubuntu.com/security/CVE-2026-53176","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53212","label":"ubuntu.com/security/CVE-2026-53212","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53228","label":"ubuntu.com/security/CVE-2026-53228","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-53359","label":"ubuntu.com/security/CVE-2026-53359","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2021-47378","CVE-2025-27558","CVE-2026-23392","CVE-2026-31405","CVE-2026-31414","CVE-2026-31448","CVE-2026-31657","CVE-2026-31668","CVE-2026-43071","CVE-2026-43198","CVE-2026-43493","CVE-2026-43499","CVE-2026-46266","CVE-2026-46331","CVE-2026-52914","CVE-2026-52924","CVE-2026-52931","CVE-2026-52955","CVE-2026-52958","CVE-2026-52982","CVE-2026-52986","CVE-2026-52989","CVE-2026-52993","CVE-2026-52999","CVE-2026-53002","CVE-2026-53006","CVE-2026-53045","CVE-2026-53088","CVE-2026-53176","CVE-2026-53212","CVE-2026-53228","CVE-2026-53359"],"downstream":[],"duplicates":[],"related":["CVE-2021-47378","CVE-2025-27558","CVE-2026-23392","CVE-2026-31405","CVE-2026-31414","CVE-2026-31448","CVE-2026-31657","CVE-2026-31668","CVE-2026-43071","CVE-2026-43198","CVE-2026-43493","CVE-2026-43499","CVE-2026-46266","CVE-2026-46331","CVE-2026-52914","CVE-2026-52924","CVE-2026-52931","CVE-2026-52955","CVE-2026-52958","CVE-2026-52982","CVE-2026-52986","CVE-2026-52989","CVE-2026-52993","CVE-2026-52999","CVE-2026-53002","CVE-2026-53006","CVE-2026-53045","CVE-2026-53088","CVE-2026-53176","CVE-2026-53212","CVE-2026-53228","CVE-2026-53359"]},"timeline":[{"kind":"published","date":"2026-08-25T21:15:06.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-11T15:00:52.538Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T21:39:37.172Z","stale":false,"partial":false}}