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Linux Kernel ftrace Softlockup Vulnerability Mitigated by cond_resched() Addition

Vulnerability

A vulnerability in the Linux kernel's ftrace functionality could lead to a softlockup condition when tracing a large number of functions. The issue was resolved by adding cond_resched() to ftrace_graph_set_hash(), allowing the kernel to remain responsive during such operations. This change aligns with similar adjustments made in other parts of the code that handle function tracing.

Impact

The vulnerability could cause the kernel to become unresponsive, triggering the softlockup watchdog.

Added: Jun 9, 2025, 7:46 PM
Updated: Jun 9, 2025, 7:46 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
4.0
remediation
0.0
relevance
0.0
threat
3.2
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.