CVE-2020-10781
- State
- Published
- Severity
- 5.5 Medium
- Published
- Sep 16, 2020
- Updated
- Oct 8, 2026
- Reserved
- Mar 20, 2020
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | redhat |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
kernelLinux Kernel |
|
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=853eab68afc80f59f36bbdeb715e5c88c501e680
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10781
- https://www.openwall.com/lists/oss-security/2020/06/18/1
- [debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security updatemailing-list
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