VULNERABILITY INTELLIGENCE

CVE-2020-10781

CVSS score5.5 MEDIUM
EPSS probability0.31%
CISA KEVNot currently listed
Published2020-09-16
Last modified2026-10-08
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • secalert@redhat.com: CWE-732
  • nvd@nist.gov: CWE-732

Primary references