{"id":"USN-8370-1","summary":"linux, linux-aws, linux-gcp, linux-ibm, linux-nvidia, linux-oracle, linux-raspi, linux-realtime vulnerabilities","details":"\nIt was discovered that the Linux kernel did not properly handle shared page\nfragments during socket buffer operations, collectively known as Dirty\nFrag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the\nRxRPC networking subsystem when processing paged fragments. A local\nattacker could use this to escalate privileges, or possibly escape a\ncontainer. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000)\n\nIt was discovered that a logic flaw existed in the XFRM ESP-in-TCP\nsubsystem in the Linux kernel when handling socket buffer fragments. This\nflaw is known as Fragnesia. A local attacker could use this to escalate\nprivileges, or possibly escape a container. (CVE-2026-43503,\nCVE-2026-46300)\n\nQualys discovered that a race condition existed in the ptrace subsystem of\nthe Linux kernel when privileged processes are exiting. An unprivileged\nlocal attacker could use this issue to expose sensitive information.\n(CVE-2026-46333)\n\nTristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0\ncontain a memory leak when handling AppArmor notifications. A local\nattacker could use this to cause resource exhaustion. (CVE-2026-47326)\n\nTristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0\ncontain a NULL pointer dereference when handling AppArmor notifications. A\nlocal attacker could use this to cause a kernel oops. (CVE-2026-47327)\n\nTristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0\ncontained an invalid free when handling AppArmor notifications. A local\nattacker could use this to corrupt kernel memory. (CVE-2026-47328)\n\nTristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0\ncontained insufficient validation of AppArmor notification responses. A\nlocal attacker could use this to allow crafted responses to be processed.\n(CVE-2026-47329)\n\nTristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 used\nan uninitialized variable when handling AppArmor notifications. A local\nattacker could use this to cause incorrect caching of data.\n(CVE-2026-47330)\n\nTristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0\ncontained an out-of-bounds (OOB) read when handling AppArmor notifications.\nA local attacker could use this to cause information disclosure of kernel\nmemory. (CVE-2026-47332)\n\nTristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0\ncontained a out-of-bounds (OOB) read when handling AppArmor notifications.\nA local attacker could use this to cause kernel memory corruption and,\ntheoretically, influence processing of AppArmor policies. (CVE-2026-47333)\n\nTristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0\ncontained incorrect holding of locks when handling AppArmor notifications.\nA local attacker could use this to cause a kernel panic or deadlock.\n(CVE-2026-47334)\n\nTristan Madani and Trevor Lawrence have each independently discovered that\nUbuntu Linux kernel 6.8, 6.17 and 7.0 contained a NULL pointer dereference\nwhen handling AppArmor network socket mediation. A local attacker could use\nthis to cause a kernel oops. (CVE-2026-47337)\n\nA security issue was discovered in the Linux kernel.\nAn attacker could possibly use this to compromise the system.\nThis update corrects flaws in the following subsystem:\n  - RDS protocol;\n(CVE-2026-43494)\n","modified":"2026-06-03T20:03:20.409209861Z","published":"2026-06-02T13:52:18Z","related":["UBUNTU-CVE-2026-43284","UBUNTU-CVE-2026-43494","UBUNTU-CVE-2026-43500","UBUNTU-CVE-2026-43503","UBUNTU-CVE-2026-45998","UBUNTU-CVE-2026-46000","UBUNTU-CVE-2026-46300","UBUNTU-CVE-2026-46333","UBUNTU-CVE-2026-47326","UBUNTU-CVE-2026-47327","UBUNTU-CVE-2026-47328","UBUNTU-CVE-2026-47329","UBUNTU-CVE-2026-47330","UBUNTU-CVE-2026-47332","UBUNTU-CVE-2026-47333","UBUNTU-CVE-2026-47334","UBUNTU-CVE-2026-47337"],"upstream":["CVE-2026-43284","CVE-2026-43494","CVE-2026-43500","CVE-2026-43503","CVE-2026-45998","CVE-2026-46000","CVE-2026-46300","CVE-2026-46333","CVE-2026-47326","CVE-2026-47327","CVE-2026-47328","CVE-2026-47329","CVE-2026-47330","CVE-2026-47332","CVE-2026-47333","CVE-2026-47334","CVE-2026-47337","UBUNTU-CVE-2026-43284","UBUNTU-CVE-2026-43494","UBUNTU-CVE-2026-43500","UBUNTU-CVE-2026-43503","UBUNTU-CVE-2026-45998","UBUNTU-CVE-2026-46000","UBUNTU-CVE-2026-46300","UBUNTU-CVE-2026-46333","UBUNTU-CVE-2026-47326","UBUNTU-CVE-2026-47327","UBUNTU-CVE-2026-47328","UBUNTU-CVE-2026-47329","UBUNTU-CVE-2026-47330","UBUNTU-CVE-2026-47332","UBUNTU-CVE-2026-47333","UBUNTU-CVE-2026-47334","UBUNTU-CVE-2026-47337"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8370-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43284"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43494"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43500"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-43503"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-45998"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-46000"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-46300"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-46333"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-47326"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-47327"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-47328"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-47329"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-47330"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-47332"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-47333"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-47334"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-47337"}],"affected":[{"package":{"name":"linux","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/linux?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.0-22.22"}]}],"versions":["6.17.0-5.5","6.17.0-6.6","6.17.0-8.8","6.18.0-8.8","6.18.0-9.9","6.19.0-3.3","6.19.0-5.5","6.19.0-6.6","6.19.0-9.9","7.0.0-7.7","7.0.0-10.10","7.0.0-12.12","7.0.0-13.13","7.0.0-14.14","7.0.0-15.15"],"ecosystem_specific":{"binaries":[{"binary_name":"bpftool","binary_version":"7.7.0+7.0.0-22.22"},{"binary_name":"linux-buildinfo-7.0.0-22-generic","binary_version":"7.0.0-22.22"},{"binary_name":"linux-buildinfo-7.0.0-22-generic-64k","binary_version":"7.0.0-22.22"},{"binary_name":"linux-cloud-tools-7.0.0-22","binary_version":"7.0.0-22.22"},{"binary_name":"linux-cloud-tools-7.0.0-22-generic","binary_version":"7.0.0-22.22"},{"binary_name":"linux-cloud-tools-common","binary_version":"7.0.0-22.22"},{"binary_name":"linux-headers-7.0.0-22","binary_version":"7.0.0-22.22"},{"binary_name":"linux-headers-7.0.0-22-generic","binary_version":"7.0.0-22.22"},{"binary_name":"linux-headers-7.0.0-22-generic-64k","binary_version":"7.0.0-22.22"},{"binary_name":"linux-image-7.0.0-22-generic","binary_version":"7.0.0-22.22"},{"binary_name":"linux-image-unsigned-7.0.0-22-generic","binary_version":"7.0.0-22.22"},{"binary_name":"linux-image-unsigned-7.0.0-22-generic-64k","binary_version":"7.0.0-22.22"},{"binary_name":"linux-lib-rust-7.0.0-22-generic","binary_version":"7.0.0-22.22"},{"binary_name":"linux-modules-7.0.0-22-generic","binary_version":"7.0.0-22.22"},{"binary_name":"linux-modules-7.0.0-22-generic-64k","binary_version":"7.0.0-22.22"},{"binary_name":"linux-perf","binary_version":"7.0.0-22.22"},{"binary_name":"linux-source-7.0.0","binary_version":"7.0.0-22.22"},{"binary_name":"linux-tools-7.0.0-22","binary_version":"7.0.0-22.22"},{"binary_name":"linux-tools-7.0.0-22-generic","binary_version":"7.0.0-22.22"},{"binary_name":"linux-tools-7.0.0-22-generic-64k","binary_version":"7.0.0-22.22"},{"binary_name":"linux-tools-common","binary_version":"7.0.0-22.22"},{"binary_name":"linux-tools-host","binary_version":"7.0.0-22.22"}],"availability":"No 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required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8370-1.json","cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[{"id":"CVE-2026-43284","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]},{"id":"CVE-2026-43494","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-2026-43500","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":"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-2026-43503","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-45998","severity":[{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-46000","severity":[{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-46300","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":"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-2026-46333","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]},{"id":"CVE-2026-47326","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-2026-47327","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-47328","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-47329","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2026-47330","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2026-47332","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-47333","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-2026-47334","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-2026-47337","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]}}},{"package":{"name":"linux-aws","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/linux-aws?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.0-1006.6"}]}],"versions":["6.17.0-1002.2","6.17.0-1003.3","6.19.0-1002.2","6.19.0-1003.3","7.0.0-1001.1","7.0.0-1003.3","7.0.0-1004.4"],"ecosystem_specific":{"binaries":[{"binary_name":"linux-aws-cloud-tools-7.0.0-1006","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-aws-headers-7.0.0-1006","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-aws-tools-7.0.0-1006","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-buildinfo-7.0.0-1006-aws","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-buildinfo-7.0.0-1006-aws-64k","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-cloud-tools-7.0.0-1006-aws","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-cloud-tools-7.0.0-1006-aws-64k","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-headers-7.0.0-1006-aws","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-headers-7.0.0-1006-aws-64k","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-image-unsigned-7.0.0-1006-aws","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-image-unsigned-7.0.0-1006-aws-64k","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-modules-7.0.0-1006-aws","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-modules-7.0.0-1006-aws-64k","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-tools-7.0.0-1006-aws","binary_version":"7.0.0-1006.6"},{"binary_name":"linux-tools-7.0.0-1006-aws-64k","binary_version":"7.0.0-1006.6"}],"availability":"No 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