{"id":"CVE-2020-10781","details":"A flaw was found in the Linux Kernel before 5.8-rc6 in the ZRAM kernel module, where a user with a local account and the ability to read the /sys/class/zram-control/hot_add file can create ZRAM device nodes in the /dev/ directory. This read allocates kernel memory and is not accounted for a user that triggers the creation of that ZRAM device. With this vulnerability, continually reading the device may consume a large amount of system memory and cause the Out-of-Memory (OOM) killer to activate and terminate random userspace processes, possibly making the system inoperable.","modified":"2026-04-16T04:38:09.569122304Z","published":"2020-09-16T13:15:10.987Z","related":["SUSE-SU-2020:2102-1","SUSE-SU-2020:2103-1","SUSE-SU-2020:2105-1","SUSE-SU-2020:2107-1","SUSE-SU-2020:2119-1","SUSE-SU-2020:2122-1","SUSE-SU-2020:2478-1","SUSE-SU-2020:2487-1","SUSE-SU-2021:0438-1","openSUSE-SU-2020:1153-1","openSUSE-SU-2020:1236-1","openSUSE-SU-2021:0242-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10781"},{"type":"FIX","url":"https://www.openwall.com/lists/oss-security/2020/06/18/1"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=853eab68afc80f59f36bbdeb715e5c88c501e680"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-10781.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"5.8.0-NA"}]},{"events":[{"introduced":"0"},{"last_affected":"5.8.0-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"5.8.0-rc2"}]},{"events":[{"introduced":"0"},{"last_affected":"5.8.0-rc3"}]},{"events":[{"introduced":"0"},{"last_affected":"5.8.0-rc4"}]},{"events":[{"introduced":"0"},{"last_affected":"5.8.0-rc5"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}