ftrace: Fix softlockup in ftrace_module_enable
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 5 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.159, 6.6.117, 6.12.58, 6.17.8, 6.18
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-68173
- 2026-10-03 Alias added: GHSA-6j5g-jv8m-99rc
References
Other 5
- https://git.kernel.org/stable/c/a1dd0abd741a8111260676da729825d6c1461a71
- https://git.kernel.org/stable/c/e81e6d6d99b16dae11adbeda5c996317942a940c
- https://git.kernel.org/stable/c/40c8ee40e48a2c82c762539952ed8fc0571db5bf
- https://git.kernel.org/stable/c/7e3c96010ade29bb340a5bdce8675f50c7f59001
- https://git.kernel.org/stable/c/4099b98203d6b33d990586542fa5beee408032a3
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- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2025-68173 · CVE Program
- CVE-2025-68173 · NVD
- FIRST EPSS
- GHSA-6j5g-jv8m-99rc · GitHub Advisory Database · CC BY 4.0
- CVE-2025-68173 · Red Hat security data · CC BY 4.0
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