CVE-2026-23311 (GCVE-0-2026-23311)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-05-11 22:04
VLAI
Title
perf/core: Fix invalid wait context in ctx_sched_in()
Summary
In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix invalid wait context in ctx_sched_in() Lockdep found a bug in the event scheduling when a pinned event was failed and wakes up the threads in the ring buffer like below. It seems it should not grab a wait-queue lock under perf-context lock. Let's do it with irq_work. [ 39.913691] ============================= [ 39.914157] [ BUG: Invalid wait context ] [ 39.914623] 6.15.0-next-20250530-next-2025053 #1 Not tainted [ 39.915271] ----------------------------- [ 39.915731] repro/837 is trying to lock: [ 39.916191] ffff88801acfabd8 (&event->waitq){....}-{3:3}, at: __wake_up+0x26/0x60 [ 39.917182] other info that might help us debug this: [ 39.917761] context-{5:5} [ 39.918079] 4 locks held by repro/837: [ 39.918530] #0: ffffffff8725cd00 (rcu_read_lock){....}-{1:3}, at: __perf_event_task_sched_in+0xd1/0xbc0 [ 39.919612] #1: ffff88806ca3c6f8 (&cpuctx_lock){....}-{2:2}, at: __perf_event_task_sched_in+0x1a7/0xbc0 [ 39.920748] #2: ffff88800d91fc18 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_in+0x1f9/0xbc0 [ 39.921819] #3: ffffffff8725cd00 (rcu_read_lock){....}-{1:3}, at: perf_event_wakeup+0x6c/0x470
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: f4b07fd62d4d11d57a15cb4ae01b3833282eb8f6 , < c67ab059953e3b66cb17ddd6524c23f9e1f6526d (git)
Affected: f4b07fd62d4d11d57a15cb4ae01b3833282eb8f6 , < 825f218ca70ef394c2b8546b313711d867b24584 (git)
Affected: f4b07fd62d4d11d57a15cb4ae01b3833282eb8f6 , < 486ff5ad49bc50315bcaf6d45f04a33ef0a45ced (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nperf/core: Correcci\u00f3n de contexto de espera inv\u00e1lido en ctx_sched_in()\n\nLockdep encontr\u00f3 un error en la programaci\u00f3n de eventos cuando un evento anclado fall\u00f3 y despierta los hilos en el b\u00fafer circular como se muestra a continuaci\u00f3n.\n\nParece que no deber\u00eda adquirir un bloqueo de cola de espera bajo el bloqueo de contexto de perf. Hag\u00e1moslo con irq_work.\n\n  [   39.913691] =============================\n  [   39.914157] [ ERROR: Contexto de espera inv\u00e1lido ]\n  [   39.914623] 6.15.0-next-20250530-next-2025053 #1 No contaminado\n  [   39.915271] -----------------------------\n  [   39.915731] repro/837 est\u00e1 intentando bloquear:\n  [   39.916191] ffff88801acfabd8 (\u0026amp;event-\u0026gt;waitq){....}-{3:3}, en: __wake_up+0x26/0x60\n  [   39.917182] otra informaci\u00f3n que podr\u00eda ayudarnos a depurar esto:\n  [   39.917761] contexto-{5:5}\n  [   39.918079] 4 bloqueos mantenidos por repro/837:\n  [   39.918530]  #0: ffffffff8725cd00 (rcu_read_lock){....}-{1:3}, en: __perf_event_task_sched_in+0xd1/0xbc0\n  [   39.919612]  #1: ffff88806ca3c6f8 (\u0026amp;cpuctx_lock){....}-{2:2}, en: __perf_event_task_sched_in+0x1a7/0xbc0\n  [   39.920748]  #2: ffff88800d91fc18 (\u0026amp;ctx-\u0026gt;lock){....}-{2:2}, en: __perf_event_task_sched_in+0x1f9/0xbc0\n  [   39.921819]  #3: ffffffff8725cd00 (rcu_read_lock){....}-{1:3}, en: perf_event_wakeup+0x6c/0x470"
          }
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        "id": "CVE-2026-23311",
        "lastModified": "2026-06-17T10:21:18.397",
        "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": "2026-03-25T11:16:27.327",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-667"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T11:03:44+00:00",
      "cve": "CVE-2026-23311",
      "id": "CVE-2026-23311",
      "initial_release_date": "2026-03-25T00:00:00+00:00",
      "product_status:known_affected": "90",
      "product_status:known_not_affected": "184",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: perf/core: Fix invalid wait context in ctx_sched_in()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23311.json",
      "version": "3"
    }
  }
}



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