CVE-2020-10773
kernel: kernel stack information leak on s390/s390x
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 28, 2019
Updated · June 28, 2026
Description
A stack information leak flaw was found in s390/s390x in the Linux kernel’s memory manager functionality, where it incorrectly writes to the /proc/sys/vm/cmm_timeout file. This flaw allows a local user to see the kernel data.
Statement
This issue is rated as having Low impact because of being limited to only s390 architecture and very limited kernel stack exposure.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CWE-626 · Null Byte Interaction Error (Poison Null Byte)