{"id":"USN-8818-6","summary":"linux-fips vulnerabilities","details":"It was discovered that some Arm processors could complete a broadcast\ntranslation lookaside buffer (TLB) invalidation before memory writes made\nthrough the invalidated translation were globally observed. A local\nattacker could possibly use this to write to memory after permission to do\nso had been revoked, bypassing memory protections or escalating privileges.\n(CVE-2025-10263)\n\nSeveral security issues were discovered in the Linux kernel.\nAn attacker could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  - ARM64 architecture;\n  - InfiniBand drivers;\n  - Network drivers;\n  - TCM subsystem;\n  - exFAT file system;\n  - Network file system (NFS) client;\n  - Network file system (NFS) server daemon;\n  - B.A.T.M.A.N. meshing protocol;\n  - IPv4 networking;\n  - IPv6 networking;\n  - Netfilter;\n  - RDS protocol;\n(CVE-2026-53186, CVE-2026-53216, CVE-2026-53221, CVE-2026-53354,\nCVE-2026-53355, CVE-2026-53398, CVE-2026-63800, CVE-2026-63808,\nCVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922,\nCVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993,\nCVE-2026-63994, CVE-2026-64007, CVE-2026-64091)\n","modified":"2026-10-02T12:27:35.638359356Z","published":"2026-10-02T06:30:36Z","related":["UBUNTU-CVE-2025-10263","UBUNTU-CVE-2026-53186","UBUNTU-CVE-2026-53216","UBUNTU-CVE-2026-53221","UBUNTU-CVE-2026-53354","UBUNTU-CVE-2026-53355","UBUNTU-CVE-2026-53398","UBUNTU-CVE-2026-63800","UBUNTU-CVE-2026-63808","UBUNTU-CVE-2026-63887","UBUNTU-CVE-2026-63888","UBUNTU-CVE-2026-63912","UBUNTU-CVE-2026-63922","UBUNTU-CVE-2026-63924","UBUNTU-CVE-2026-63984","UBUNTU-CVE-2026-63992","UBUNTU-CVE-2026-63993","UBUNTU-CVE-2026-63994","UBUNTU-CVE-2026-64007","UBUNTU-CVE-2026-64091"],"upstream":["CVE-2025-10263","CVE-2026-53186","CVE-2026-53216","CVE-2026-53221","CVE-2026-53354","CVE-2026-53355","CVE-2026-53398","CVE-2026-63800","CVE-2026-63808","CVE-2026-63887","CVE-2026-63888","CVE-2026-63912","CVE-2026-63922","CVE-2026-63924","CVE-2026-63984","CVE-2026-63992","CVE-2026-63993","CVE-2026-63994","CVE-2026-64007","CVE-2026-64091","UBUNTU-CVE-2025-10263","UBUNTU-CVE-2026-53186","UBUNTU-CVE-2026-53216","UBUNTU-CVE-2026-53221","UBUNTU-CVE-2026-53354","UBUNTU-CVE-2026-53355","UBUNTU-CVE-2026-53398","UBUNTU-CVE-2026-63800","UBUNTU-CVE-2026-63808","UBUNTU-CVE-2026-63887","UBUNTU-CVE-2026-63888","UBUNTU-CVE-2026-63912","UBUNTU-CVE-2026-63922","UBUNTU-CVE-2026-63924","UBUNTU-CVE-2026-63984","UBUNTU-CVE-2026-63992","UBUNTU-CVE-2026-63993","UBUNTU-CVE-2026-63994","UBUNTU-CVE-2026-64007","UBUNTU-CVE-2026-64091"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8818-6"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-10263"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53186"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53216"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53221"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53354"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53355"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53398"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63800"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63808"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63887"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63888"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63912"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63922"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63924"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63984"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63992"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63993"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63994"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-64007"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-64091"}],"affected":[{"package":{"name":"linux-fips","ecosystem":"Ubuntu:Pro:FIPS-updates:22.04:LTS","purl":"pkg:deb/ubuntu/linux-fips?arch=source&distro=fips-updates%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-194.204+fips1"}]}],"versions":["5.15.0-73.80+fips1","5.15.0-92.102+fips1","5.15.0-94.104+fips1","5.15.0-97.107+fips1","5.15.0-100.110+fips1","5.15.0-101.111+fips1","5.15.0-102.112+fips1","5.15.0-105.115+fips1","5.15.0-106.116+fips1","5.15.0-107.117+fips1","5.15.0-111.121+fips1","5.15.0-113.123+fips1","5.15.0-115.125+fips1","5.15.0-117.127+fips1","5.15.0-118.128+fips1","5.15.0-119.129+fips1","5.15.0-121.131+fips1","5.15.0-122.132+fips1","5.15.0-124.134+fips1","5.15.0-125.135+fips1","5.15.0-127.137+fips1","5.15.0-128.138+fips1","5.15.0-130.140+fips1","5.15.0-131.141+fips1","5.15.0-133.144+fips1","5.15.0-134.145+fips1","5.15.0-135.146+fips1","5.15.0-136.147+fips1","5.15.0-138.148+fips1","5.15.0-139.149+fips1","5.15.0-140.150+fips1","5.15.0-141.151+fips1","5.15.0-142.152+fips1","5.15.0-143.153+fips1","5.15.0-144.157+fips1","5.15.0-145.158+fips1","5.15.0-152.162+fips1","5.15.0-153.163+fips1","5.15.0-156.166+fips1","5.15.0-157.167+fips1","5.15.0-160.170+fips1","5.15.0-161.171+fips1","5.15.0-163.173+fips1","5.15.0-164.174+fips1","5.15.0-168.178+fips1","5.15.0-170.180+fips1","5.15.0-171.181+fips1","5.15.0-173.183+fips1","5.15.0-174.184+fips1","5.15.0-176.186+fips1","5.15.0-177.187+fips1","5.15.0-179.189+fips1","5.15.0-181.191+fips1","5.15.0-185.195+fips1","5.15.0-186.196+fips1","5.15.0-190.200+fips1","5.15.0-191.201+fips1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"linux-buildinfo-5.15.0-194-fips","binary_version":"5.15.0-194.204+fips1"},{"binary_name":"linux-cloud-tools-5.15.0-194-fips","binary_version":"5.15.0-194.204+fips1"},{"binary_name":"linux-fips-cloud-tools-5.15.0-194","binary_version":"5.15.0-194.204+fips1"},{"binary_version":"5.15.0-194.204+fips1","binary_name":"linux-fips-headers-5.15.0-194"},{"binary_version":"5.15.0-194.204+fips1","binary_name":"linux-fips-tools-5.15.0-194"},{"binary_name":"linux-headers-5.15.0-194-fips","binary_version":"5.15.0-194.204+fips1"},{"binary_name":"linux-image-unsigned-5.15.0-194-fips","binary_version":"5.15.0-194.204+fips1"},{"binary_name":"linux-image-unsigned-hmac-5.15.0-194-fips","binary_version":"5.15.0-194.204+fips1"},{"binary_version":"5.15.0-194.204+fips1","binary_name":"linux-modules-5.15.0-194-fips"},{"binary_name":"linux-modules-extra-5.15.0-194-fips","binary_version":"5.15.0-194.204+fips1"},{"binary_name":"linux-modules-iwlwifi-5.15.0-194-fips","binary_version":"5.15.0-194.204+fips1"},{"binary_version":"5.15.0-194.204+fips1","binary_name":"linux-tools-5.15.0-194-fips"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:FIPS-updates:22.04:LTS","cves":[{"id":"CVE-2025-10263","severity":[{"score":"CVSS:4.0/AV:L/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:C/C:H/I:H/A:N"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"type":"Ubuntu","score":"high"}]},{"id":"CVE-2026-53186","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:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"},{"score":"high","type":"Ubuntu"}]},{"severity":[{"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":"low"}],"id":"CVE-2026-53216"},{"id":"CVE-2026-53221","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/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:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-53354"},{"id":"CVE-2026-53355","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-53398","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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"critical"}]},{"id":"CVE-2026-63800","severity":[{"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":"low"}]},{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/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:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-63808"},{"id":"CVE-2026-63887","severity":[{"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"}]},{"severity":[{"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-2026-63888"},{"severity":[{"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-2026-63912"},{"severity":[{"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-2026-63922"},{"id":"CVE-2026-63924","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-2026-63984","severity":[{"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"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-63992"},{"severity":[{"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-2026-63993"},{"severity":[{"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-2026-63994"},{"id":"CVE-2026-64007","severity":[{"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"}]},{"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"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2026-64091"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8818-6.json"}}],"schema_version":"1.9.0"}