CVE-2020-10781
Last modified
CVE-2020-10781 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 0.31% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.8.0 |
| Linux | Linux Kernel | 5.8.0 |
| Debian | Debian Linux | 9.0 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10781Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing List, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/06/18/1Mailing List, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10781Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing List, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/06/18/1Mailing List, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-10781?
How severe is CVE-2020-10781?
How do I fix CVE-2020-10781?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-10776A flaw was found in Keycloak before version 12.0.0, where it…4.8
- CVE-2020-10777A cross-site scripting flaw was found in Report Menu feature…5.4
- CVE-2020-10778In Red Hat CloudForms 4.7 and 5, the read only widgets can b…6
- CVE-2020-10779Red Hat CloudForms 4.7 and 5 leads to insecure direct object…6.5
- CVE-2020-1078An elevation of privilege vulnerability exists in Windows In…7.8
- CVE-2020-10780Red Hat CloudForms 4.7 and 5 is affected by CSV Injection fl…6.3
- CVE-2020-10782An exposure of sensitive information flaw was found in Ansib…6.5
- CVE-2020-10783Red Hat CloudForms 4.7 and 5 is affected by a role-based pri…8.3
- CVE-2020-10786A remote command execution in Vesta Control Panel through 0.…8.8
- CVE-2020-10787An elevation of privilege in Vesta Control Panel through 0.9…8.8
- CVE-2020-10788openITCOCKPIT before 3.7.3 uses the 1fea123e07f730f76e661bce…9.1
- CVE-2020-10789openITCOCKPIT before 3.7.3 has a web-based terminal that all…9.8
Are you affected by CVE-2020-10781?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
