{"id":"OESA-2021-1336","summary":"kernel security update","details":"he Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\r\n\r\nA flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.(CVE-2021-3640)","modified":"2026-08-18T01:15:56.489411118Z","published":"2021-09-06T11:04:36Z","upstream":["CVE-2021-3640"],"database_specific":{"severity":"Low"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1336"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3640"}],"affected":[{"package":{"name":"kernel","ecosystem":"openEuler:20.03-LTS-SP1","purl":"pkg:rpm/openEuler/kernel&distro=openEuler-20.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.19.90-2109.1.0.0108.oe1"}]}],"ecosystem_specific":{"aarch64":["kernel-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","python2-perf-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-debugsource-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","perf-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-tools-devel-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","perf-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","python2-perf-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","python3-perf-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","bpftool-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","bpftool-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","python3-perf-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-tools-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-devel-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-tools-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-source-4.19.90-2109.1.0.0108.oe1.aarch64.rpm"],"src":["kernel-4.19.90-2109.1.0.0108.oe1.src.rpm"],"x86_64":["kernel-tools-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","perf-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-tools-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-tools-devel-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","perf-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","python3-perf-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","python2-perf-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","bpftool-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","python3-perf-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-debugsource-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","python2-perf-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-source-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-devel-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","bpftool-4.19.90-2109.1.0.0108.oe1.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2021-1336.json"}},{"package":{"name":"kernel","ecosystem":"openEuler:20.03-LTS-SP2","purl":"pkg:rpm/openEuler/kernel&distro=openEuler-20.03-LTS-SP2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.19.90-2109.1.0.0108.oe1"}]}],"ecosystem_specific":{"aarch64":["perf-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","bpftool-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-tools-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","python2-perf-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","python3-perf-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-tools-devel-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-tools-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","perf-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","python3-perf-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-debugsource-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-devel-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","python2-perf-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","bpftool-debuginfo-4.19.90-2109.1.0.0108.oe1.aarch64.rpm","kernel-source-4.19.90-2109.1.0.0108.oe1.aarch64.rpm"],"src":["kernel-4.19.90-2109.1.0.0108.oe1.src.rpm"],"x86_64":["kernel-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","perf-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-tools-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","python2-perf-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","python3-perf-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","python3-perf-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-source-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-tools-devel-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","perf-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-tools-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","bpftool-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","python2-perf-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","bpftool-debuginfo-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-debugsource-4.19.90-2109.1.0.0108.oe1.x86_64.rpm","kernel-devel-4.19.90-2109.1.0.0108.oe1.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2021-1336.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}