CVE-2020-10781
Public on 2020-08-18
        Modified on 2020-08-24
        
      Description
            
              A flaw was found 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.
            
          Severity
          
          See what this means
        CVSS v3 Base Score
          
          See breakdown
        Affected Packages
| Platform | Package | Release Date | Advisory | Status | 
|---|---|---|---|---|
| Amazon Linux 2 - Core | kernel | 2020-08-24 | ALAS2-2020-1480 | Fixed | 
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2022-01-28 | ALAS2KERNEL-5.4-2022-014 | Fixed | 
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | 
| NVD | CVSSv2 | 4.9 | AV:L/AC:L/Au:N/C:N/I:N/A:C | 
| NVD | CVSSv3 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |