Disclosure summary
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.
Source-reported weakness categories
CWE-732
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2020-10781
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| linux | linux_kernel | * {"versionEndExcluding":"5.8.0"} |
| linux | linux_kernel | 5.8.0 |
| linux | linux_kernel | 5.8.0 |
| linux | linux_kernel | 5.8.0 |
| linux | linux_kernel | 5.8.0 |
| linux | linux_kernel | 5.8.0 |
| linux | linux_kernel | 5.8.0 |
| debian | debian_linux | 9.0 |
Original records & references
- NIST NVD record
- CVE Program record
- bugzilla.redhat.com — Issue Tracking, Third Party Advisory
- git.kernel.org — Patch, Vendor Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- www.openwall.com — Mailing List, Patch, Third Party Advisory
- bugzilla.redhat.com — Issue Tracking, Third Party Advisory
- git.kernel.org — Patch, Vendor Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- www.openwall.com — Mailing List, Patch, Third Party Advisory
PUBLISHED 2020-09-16T09:15:10-04:00
MODIFIED 2026-10-08T17:17:20-04:00
INGESTED 2026-10-10T20:50:19-04:00