Homepage

Arbitrary Code Injection The advisory has been revoked - it doesn't affect any version of package kernel-cross-headers  (opens in a new tab)

Threat Intelligence

EPSS
0.71% (49th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-RHEL8-KERNELCROSSHEADERS-1446083
  • published26 Jul 2021
  • disclosed12 May 2020
Report a new vulnerability Found a mistake?

Introduced: 12 May 2020

CVE-2020-12826  (opens in a new tab)
CWE-94  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-cross-headers package and not the kernel-cross-headers package as distributed by RHEL.

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.