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CVE-2020-10781

5.5 medium SSVC exploitation: none Modified
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 4

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.5 · linux, debianNVD modified 2026-10-08 21:17

Affected (CPE criteria) 8

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.8.0:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.8.0:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.8.0:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.8.0:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.8.0:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.8.0:rc5:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

References 8