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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
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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Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/sched/ext.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
            },
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              "versionType": "git"
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          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
          "versions": [
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              "status": "unaffected",
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              "version": "6.12.9",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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                  "versionStartIncluding": "6.12",
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "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()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:59:53.842Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/786362ce60d79967875f43e0ba55ad7a5376c133"
        },
        {
          "url": "https://git.kernel.org/stable/c/18b2093f4598d8ee67a8153badc93f0fa7686b8a"
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      ],
      "title": "sched_ext: Fix invalid irq restore in scx_ops_bypass()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-57891",
    "datePublished": "2025-01-15T13:05:43.607Z",
    "dateReserved": "2025-01-11T14:45:42.028Z",
    "dateUpdated": "2026-05-11T20:59:53.842Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2",
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    "epss": {
      "cve": "CVE-2024-57891",
      "date": "2026-09-16",
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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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"kernel/sched/ext.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"0e7ffff1b8117b05635c87d3c9099f6aa9c9b689\",\"lessThan\":\"786362ce60d79967875f43e0ba55ad7a5376c133\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0e7ffff1b8117b05635c87d3c9099f6aa9c9b689\",\"lessThan\":\"18b2093f4598d8ee67a8153badc93f0fa7686b8a\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"kernel/sched/ext.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.9\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.12.1\",\"versionEndExcluding\":\"6.12.9\",\"matchCriteriaId\":\"51AF98D0-F3AA-4960-8230-B6DE6A952104\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"0E698080-7669-4132-8817-4C674EEBCE54\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"24B88717-53F5-42AA-9B72-14C707639E3F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"1EF8CD82-1EAE-4254-9545-F85AB94CF90F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"5A073481-106D-4B15-B4C7-FB0213B8E1D4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE491969-75AE-4A6B-9A58-8FC5AF98798F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"93C0660D-7FB8-4FBA-892A-B064BA71E49E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"034C36A6-C481-41F3-AE9A-D116E5BE6895\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/18b2093f4598d8ee67a8153badc93f0fa7686b8a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/786362ce60d79967875f43e0ba55ad7a5376c133\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "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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      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T01:06:55Z",
      "cve": "CVE-2024-57891",
      "id": "CVE-2024-57891",
      "initial_release_date": "2025-01-16T03:49:14Z",
      "product_status:first_fixed": "2",
      "product_status:known_not_affected": "463",
      "product_status:recommended": "154",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-57891",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-57891.json",
      "version": "33"
    }
  }
}



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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.


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