CVE-2025-68173

Linux Kernel - Denial of Service via ftrace_module_enable Soft Lockup

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: ftrace: Fix softlockup in ftrace_module_enable A soft lockup was observed when loading amdgpu module. If a module has a lot of tracable functions, multiple calls to kallsyms_lookup can spend too much time in RCU critical section and with disabled preemption, causing kernel panic. This is the same issue that was fixed in commit d0b24b4e91fc ("ftrace: Prevent RCU stall on PREEMPT_VOLUNTARY kernels") and commit 42ea22e754ba ("ftrace: Add cond_resched() to ftrace_graph_set_hash()"). Fix it the same way by adding cond_resched() in ftrace_module_enable.

Scores

EPSS 0.0004
EPSS Percentile 13.4%

Details

Status published
Products (16)
linux/Kernel 4.5.0 - 6.1.159linux
linux/Kernel 6.13.0 - 6.17.8linux
linux/Kernel 6.2.0 - 6.6.117linux
linux/Kernel 6.7.0 - 6.12.58linux
Linux/Linux < 4.5
Linux/Linux 4.5
Linux/Linux 6.1.159 - 6.1.*
Linux/Linux 6.12.58 - 6.12.*
Linux/Linux 6.17.8 - 6.17.*
Linux/Linux 6.18
... and 6 more
Published Dec 16, 2025
Tracked Since Feb 18, 2026