CVE-2020-10781

Medium

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.

Package Linux Kernel
Published 2020-09-16
Last modified 2024-11-21
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-732

CVE-2020-10781 is classified as CWE-732

See CWE-732 on MITRE CWE for full details on this weakness type.

References

4 total

Frequently asked questions

  • What is CVE-2020-10781?

    CVE-2020-10781 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2020-10781 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2020-10781?

    CVE-2020-10781 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2020-10781?

    Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2020-10781 patch availability.

  • Is CVE-2020-10781 actively exploited?

    No. CVE-2020-10781 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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