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CVE-2020-10781

Published: Sep 16, 2020Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-732
NVD MITRE
5.5CVSSMEDIUM
EPSS Score
0.3%
Top 77.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-732

Affected Products

kernelLinux Kernel
On-prem
Operating Systems / linux-distro
linux kernellinux
On-premOS
Operating Systems
debian linuxdebian
On-premOS
Operating Systems / linux-distro
UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
OpenSUSE LeapNovell Inc.
On-premOS
Operating Systems / linux-distro
linux kerneloss-projectOperating Systemsaka linux, linux-kernel
linuxoss-projectOperating Systemsaka the linux kernel
debianoss-projectGBOperating Systemsaka debian gnu/linux
canonical ltd.commercialGBOperating Systemsaka canonical
novell inc.commercialUSOperating Systems
and 3 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=853eab68afc80f59f36bbdeb715e5c88c501e680
git.kernel.org
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10781
bugzilla.redhat.com
https://www.openwall.com/lists/oss-security/2020/06/18/1
openwall.com
and 22 more references View all →

Timeline

Published
Sep 16, 2020
Last Updated
Nov 21, 2024

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