CVE-2020-12826

CVE Details

Release Date:

2020-05-12

Description

A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2. Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in a different security domain. Exploitation limitations include the amount of elapsed time before an integer overflow occurs, and the lack of scenarios where signals to a parent process present a substantial operational threat.

See more information about CVE-2020-12826 from MITRE CVE dictionary and NIST NVD

CVSS v3.0 metrics

NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score:	5.3	Base Metrics:	AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Access Vector:	Local network	Attack Complexity:	Low
Privileges Required:	Low	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	Low
Integrity Impact:	Low	Availability Impact:	Low

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kernel)	ELSA-2020-4060	2020-10-06
Oracle Linux version 8 (kernel)	ELSA-2020-4431	2020-11-10

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team