CVE-2024-57891 (GCVE-0-2024-57891)

Vulnerability from cvelistv5 – Published: 2025-01-15 13:05 – Updated: 2026-05-11 20:59
VLAI
Title
sched_ext: Fix invalid irq restore in scx_ops_bypass()
Summary
In the Linux kernel, the following vulnerability has been resolved: sched_ext: Fix invalid irq restore in scx_ops_bypass() While adding outer irqsave/restore locking, 0e7ffff1b811 ("scx: Fix raciness in scx_ops_bypass()") forgot to convert an inner rq_unlock_irqrestore() to rq_unlock() which could re-enable IRQ prematurely leading to the following warning: raw_local_irq_restore() called with IRQs enabled WARNING: CPU: 1 PID: 96 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x30/0x40 ... Sched_ext: create_dsq (enabling) pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : warn_bogus_irq_restore+0x30/0x40 lr : warn_bogus_irq_restore+0x30/0x40 ... Call trace: warn_bogus_irq_restore+0x30/0x40 (P) warn_bogus_irq_restore+0x30/0x40 (L) scx_ops_bypass+0x224/0x3b8 scx_ops_enable.isra.0+0x2c8/0xaa8 bpf_scx_reg+0x18/0x30 ... irq event stamp: 33739 hardirqs last enabled at (33739): [<ffff8000800b699c>] scx_ops_bypass+0x174/0x3b8 hardirqs last disabled at (33738): [<ffff800080d48ad4>] _raw_spin_lock_irqsave+0xb4/0xd8 Drop the stray _irqrestore().
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0e7ffff1b8117b05635c87d3c9099f6aa9c9b689 , < 786362ce60d79967875f43e0ba55ad7a5376c133 (git)
Affected: 0e7ffff1b8117b05635c87d3c9099f6aa9c9b689 , < 18b2093f4598d8ee67a8153badc93f0fa7686b8a (git)
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Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.9 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: Fix invalid irq restore in scx_ops_bypass()\n\nWhile adding outer irqsave/restore locking, 0e7ffff1b811 (\"scx: Fix raciness\nin scx_ops_bypass()\") forgot to convert an inner rq_unlock_irqrestore() to\nrq_unlock() which could re-enable IRQ prematurely leading to the following\nwarning:\n\n  raw_local_irq_restore() called with IRQs enabled\n  WARNING: CPU: 1 PID: 96 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x30/0x40\n  ...\n  Sched_ext: create_dsq (enabling)\n  pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n  pc : warn_bogus_irq_restore+0x30/0x40\n  lr : warn_bogus_irq_restore+0x30/0x40\n  ...\n  Call trace:\n   warn_bogus_irq_restore+0x30/0x40 (P)\n   warn_bogus_irq_restore+0x30/0x40 (L)\n   scx_ops_bypass+0x224/0x3b8\n   scx_ops_enable.isra.0+0x2c8/0xaa8\n   bpf_scx_reg+0x18/0x30\n  ...\n  irq event stamp: 33739\n  hardirqs last  enabled at (33739): [\u003cffff8000800b699c\u003e] scx_ops_bypass+0x174/0x3b8\n  hardirqs last disabled at (33738): [\u003cffff800080d48ad4\u003e] _raw_spin_lock_irqsave+0xb4/0xd8\n\nDrop the stray _irqrestore()."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sched_ext: Arreglar restauraci\u00f3n de irq no v\u00e1lida en scx_ops_bypass() Al agregar el bloqueo de irqsave/restore externo, 0e7ffff1b811 (\"scx: Arreglar la agresividad en scx_ops_bypass()\") olvid\u00f3 convertir un rq_unlock_irqrestore() interno en rq_unlock() que podr\u00eda volver a habilitar IRQ prematuramente, lo que genera la siguiente advertencia: raw_local_irq_restore() llamado con IRQ habilitados ADVERTENCIA: CPU: 1 PID: 96 en kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x30/0x40 ... Sched_ext: create_dsq (habilitando) pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : warn_bogus_irq_restore+0x30/0x40 lr : warn_bogus_irq_restore+0x30/0x40 ... Rastreo de llamadas: warn_bogus_irq_restore+0x30/0x40 (P) warn_bogus_irq_restore+0x30/0x40 (L) scx_ops_bypass+0x224/0x3b8 scx_ops_enable.isra.0+0x2c8/0xaa8 bpf_scx_reg+0x18/0x30 ... marca de evento irq: 33739 hardirqs habilitados por \u00faltima vez en (33739): [] scx_ops_bypass+0x174/0x3b8 hardirqs deshabilitados por \u00faltima vez en (33738): [] _raw_spin_lock_irqsave+0xb4/0xd8 Elimina el _irqrestore() perdido."
          }
        ],
        "id": "CVE-2024-57891",
        "lastModified": "2026-06-17T08:14:09.620",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
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              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
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        "published": "2025-01-15T13:15:13.590",
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          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
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                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2025-11-25T10:24:26+00:00",
      "cve": "CVE-2024-57891",
      "id": "CVE-2024-57891",
      "initial_release_date": "2024-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "276",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: sched_ext: Fix invalid irq restore in scx_ops_bypass()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-57891.json",
      "version": "3"
    }
  }
}



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