Release Date: | 2020-09-16 |
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.
See more information about CVE-2020-10781 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
Base Score: | 5.5 | Base Metrics: | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Access Vector: | Local network | Attack Complexity: | Low |
Privileges Required: | Low | User Interaction: | None |
Scope: | Unchanged | Confidentiality Impact: | None |
Integrity Impact: | None | Availability Impact: | High |
Platform | Errata | Release Date |
Oracle Linux version 7 (kernel-uek) | ELSA-2020-5844 | 2020-09-11 |
Oracle Linux version 7 (kernel-uek) | ELSA-2020-5845 | 2020-09-11 |
Oracle Linux version 7 (kernel-uek) | ELSA-2020-5848 | 2020-09-14 |
Oracle Linux version 7 (kernel-uek) | ELSA-2020-5885 | 2020-10-12 |
Oracle Linux version 8 (kernel-uek) | ELSA-2020-5848 | 2020-09-14 |
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team