CVE-2025-68173

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxb7ffffbb46f205e7727a18bcc7a46c3c2b534f7c < a1dd0abd741a8111260676da729825d6c1461a71affected
LinuxLinuxb7ffffbb46f205e7727a18bcc7a46c3c2b534f7c < e81e6d6d99b16dae11adbeda5c996317942a940caffected
LinuxLinuxb7ffffbb46f205e7727a18bcc7a46c3c2b534f7c < 40c8ee40e48a2c82c762539952ed8fc0571db5bfaffected
LinuxLinuxb7ffffbb46f205e7727a18bcc7a46c3c2b534f7c < 7e3c96010ade29bb340a5bdce8675f50c7f59001affected
LinuxLinuxb7ffffbb46f205e7727a18bcc7a46c3c2b534f7c < 4099b98203d6b33d990586542fa5beee408032a3affected
LinuxLinux4.5affected
LinuxLinux0 < 4.5unaffected
LinuxLinux6.1.159 <= 6.1.*unaffected
LinuxLinux6.6.117 <= 6.6.*unaffected
LinuxLinux6.12.58 <= 6.12.*unaffected
LinuxLinux6.17.8 <= 6.17.*unaffected
LinuxLinux6.18 <= *unaffected

Weaknesses

References