{"id":"OESA-2021-1293","summary":"kernel security update","details":"The Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\r\n\r\nfs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.(CVE-2021-33909)","modified":"2026-03-11T06:02:03.613045Z","published":"2021-07-31T11:03:06Z","upstream":["CVE-2021-33909"],"database_specific":{"severity":"High"},"references":[{"type":"ADVISORY","url":"https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1293"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33909"}],"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":"4.19.90-2107.5.0.0098.oe1"}]}],"ecosystem_specific":{"src":["kernel-4.19.90-2107.5.0.0098.oe1.src.rpm"],"aarch64":["python3-perf-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-devel-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","perf-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-source-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","python2-perf-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-debugsource-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","perf-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-tools-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","bpftool-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-tools-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","python3-perf-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","python2-perf-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-tools-devel-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","bpftool-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm"],"x86_64":["kernel-devel-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-tools-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","perf-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","python2-perf-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","python2-perf-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-tools-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","bpftool-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","python3-perf-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-debugsource-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","bpftool-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-tools-devel-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","python3-perf-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","perf-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-source-4.19.90-2107.5.0.0098.oe1.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2021-1293.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":"4.19.90-2107.5.0.0098.oe1"}]}],"ecosystem_specific":{"src":["kernel-4.19.90-2107.5.0.0098.oe1.src.rpm"],"aarch64":["python3-perf-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-devel-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","perf-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-source-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","python2-perf-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-debugsource-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","perf-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-tools-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","bpftool-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-tools-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","python3-perf-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","python2-perf-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","kernel-tools-devel-4.19.90-2107.5.0.0098.oe1.aarch64.rpm","bpftool-debuginfo-4.19.90-2107.5.0.0098.oe1.aarch64.rpm"],"x86_64":["kernel-devel-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-tools-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","perf-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","python2-perf-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","python2-perf-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-tools-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","bpftool-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","python3-perf-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-debugsource-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","bpftool-debuginfo-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-tools-devel-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","python3-perf-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","perf-4.19.90-2107.5.0.0098.oe1.x86_64.rpm","kernel-source-4.19.90-2107.5.0.0098.oe1.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2021-1293.json"}}],"schema_version":"1.7.5"}