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CVE-2025-68173 (GCVE-0-2025-68173)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:42 – Updated: 2026-05-11 21:48
VLAI
Title
ftrace: Fix softlockup in ftrace_module_enable
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c , < a1dd0abd741a8111260676da729825d6c1461a71 (git)
Affected: b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c , < e81e6d6d99b16dae11adbeda5c996317942a940c (git)
Affected: b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c , < 40c8ee40e48a2c82c762539952ed8fc0571db5bf (git)
Affected: b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c , < 7e3c96010ade29bb340a5bdce8675f50c7f59001 (git)
Affected: b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c , < 4099b98203d6b33d990586542fa5beee408032a3 (git)
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Linux Linux Affected: 4.5
Unaffected: 0 , < 4.5 (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.58 , ≤ 6.12.* (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nftrace: Fix softlockup in ftrace_module_enable\n\nA soft lockup was observed when loading amdgpu module.\nIf a module has a lot of tracable functions, multiple calls\nto kallsyms_lookup can spend too much time in RCU critical\nsection and with disabled preemption, causing kernel panic.\nThis is the same issue that was fixed in\ncommit d0b24b4e91fc (\"ftrace: Prevent RCU stall on PREEMPT_VOLUNTARY\nkernels\") and commit 42ea22e754ba (\"ftrace: Add cond_resched() to\nftrace_graph_set_hash()\").\n\nFix it the same way by adding cond_resched() in ftrace_module_enable."
        }
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        "shortName": "Linux"
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        },
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      "title": "ftrace: Fix softlockup in ftrace_module_enable",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68173",
    "datePublished": "2025-12-16T13:42:53.106Z",
    "dateReserved": "2025-12-16T13:41:40.251Z",
    "dateUpdated": "2026-05-11T21:48:04.420Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:19:48+00:00",
      "cve": "CVE-2025-68173",
      "id": "CVE-2025-68173",
      "initial_release_date": "2025-12-16T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ftrace: Fix softlockup in ftrace_module_enable",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68173.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.