{"id":"CVE-2021-27365","details":"An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message.","modified":"2026-04-16T04:34:11.333772488Z","published":"2021-03-07T05:15:13.623Z","related":["ALSA-2021:1093","SUSE-SU-2021:1046-1","SUSE-SU-2021:1074-1","SUSE-SU-2021:1075-1","SUSE-SU-2021:1145-1","SUSE-SU-2021:1148-1","SUSE-SU-2021:1175-1","SUSE-SU-2021:1176-1","SUSE-SU-2021:1177-1","SUSE-SU-2021:1210-1","SUSE-SU-2021:1211-1","SUSE-SU-2021:1238-1","SUSE-SU-2021:14724-1","SUSE-SU-2021:1573-1","SUSE-SU-2021:1596-1","SUSE-SU-2021:1617-1","SUSE-SU-2021:1623-1","SUSE-SU-2021:1624-1","SUSE-SU-2021:1625-1","SUSE-SU-2021:1975-1","SUSE-SU-2021:1977-1","SUSE-SU-2021:2577-1","openSUSE-SU-2021:0532-1","openSUSE-SU-2021:0758-1","openSUSE-SU-2021:1975-1","openSUSE-SU-2021:1977-1"],"references":[{"type":"ADVISORY","url":"http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210409-0001/"},{"type":"ADVISORY","url":"https://www.openwall.com/lists/oss-security/2021/03/06/1"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=1182715"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuoct2021.html"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e94cc25a422ec97d1421e28d97b7ee"},{"type":"EVIDENCE","url":"https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27365.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"5.11.3"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"7.4.0"},{"last_affected":"7.7.1"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}