Tracker / CVE-2020-12826
CVE-2020-12826
Medium 5.3
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.
Affected products and versions
| canonical | ubuntu_linux |
|---|---|
| linux | linux_kernel · … → 5.6.5 |
| redhat | enterprise_linux |
| redhat | enterprise_mrg |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.