CVE-2020-35508
kernel: fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 9, 2020
Updated · June 28, 2026
Description
A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.
Statement
The incorrect initialization of the process id affects Red Hat Enterprise Linux only.
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 don't 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 · 4.5CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE-665 · Improper Initialization