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LIN1018-6151 : Security Advisory - linux - CVE-2020-12826

Created: May 13, 2020    Updated: Apr 22, 2022
Resolved Date: May 21, 2020
Found In Version: 10.18.44.1
Fix Version: 10.18.44.17
Severity: Standard
Applicable for: Wind River Linux LTS 18
Component/s: Kernel

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.

CREATE(Triage):(User=admin) CVE-2020-12826 (https://nvd.nist.gov/vuln/detail/CVE-2020-12826)

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