What is CVE-2025-68173?

CVE-2025-68173 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 4.5 onward and patched in 6.1.159, 6.6.117, 6.12.58 and others. CVE-2025-68173 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-68173?

CVE-2025-68173 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2025-68173?

Yes, CVE-2025-68173 has been patched. Fixed versions include 6.1.159, 6.6.117, 6.12.58 and others. If you are running Linux kernel 4.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-68173 actively exploited?

CVE-2025-68173 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-68173

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.

Package Linux Kernel

Published 2025-12-16

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 4.5 and later are affected. Fixed in 6.1.159, 6.6.117, 6.12.58, 6.17.8, 6.18 and their respective stable series.

Affected from

≥ 4.5

Fixed in

✓ 6.1.159 6.1.x ✓ 6.6.117 6.6.x ✓ 6.12.58 6.12.x ✓ 6.17.8 6.17.x ✓ 6.18

References

The following references provide additional information about CVE-2025-68173 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/4099b98203d6b33d990586542fa5beee408032a3
Patch
Kernel patch commit
https://git.kernel.org/stable/c/40c8ee40e48a2c82c762539952ed8fc0571db5bf
Patch
Kernel patch commit
https://git.kernel.org/stable/c/7e3c96010ade29bb340a5bdce8675f50c7f59001
Patch

5 patch commits total View all on NVD

Frequently asked questions

What is CVE-2025-68173?

CVE-2025-68173 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.5 onward and has been patched in 6.1.159, 6.6.117, 6.12.58 and others. CVE-2025-68173 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2025-68173?

Yes — CVE-2025-68173 has been patched. Fixed versions include 6.1.159, 6.6.117, 6.12.58 and others. If you are running Linux kernel 4.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-68173 actively exploited?

No — CVE-2025-68173 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.