Vulnerabilities > CVE-2021-47159 - Infinite Loop vulnerability in Linux Kernel

Summary

In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix a crash if ->get_sset_count() fails If ds->ops->get_sset_count() fails then it "count" is a negative error code such as -EOPNOTSUPP. Because "i" is an unsigned int, the negative error code is type promoted to a very high value and the loop will corrupt memory until the system crashes. Fix this by checking for error codes and changing the type of "i" to just int.

Vulnerable Configurations

Common Weakness Enumeration (CWE)

• CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

References