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
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7063 records in the last 180 days details
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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    "datePublished": "2025-12-16T13:42:53.106Z",
    "dateReserved": "2025-12-16T13:41:40.251Z",
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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."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nftrace: Correcci\u00f3n de softlockup en ftrace_module_enable\n\nSe observ\u00f3 un soft lockup al cargar el m\u00f3dulo amdgpu.\nSi un m\u00f3dulo tiene muchas funciones rastreables, m\u00faltiples llamadas\na kallsyms_lookup pueden pasar demasiado tiempo en la secci\u00f3n cr\u00edtica de RCU\ny con la preemption deshabilitada, causando un p\u00e1nico del kernel.\nEste es el mismo problema que se solucion\u00f3 en\nel commit d0b24b4e91fc (\u0027ftrace: Evitar el bloqueo de RCU en kernels PREEMPT_VOLUNTARY\u0027)\ny el commit 42ea22e754ba (\u0027ftrace: A\u00f1adir cond_resched() a ftrace_graph_set_hash()\u0027).\n\nSe soluciona de la misma manera a\u00f1adiendo cond_resched() en ftrace_module_enable."
          }
        ],
        "id": "CVE-2025-68173",
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        "metrics": {},
        "published": "2025-12-16T14:15:49.213",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
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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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