{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-58086",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2024-58086"
  ],
  "published": "2025-03-06T16:28:54Z",
  "summary": "drm/v3d: Stop active perfmon if it is being destroyed",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/v3d: Stop active perfmon if it is being destroyed\n\nIf the active performance monitor (`v3d->active_perfmon`) is being\ndestroyed, stop it first. Currently, the active perfmon is not\nstopped during destruction, leaving the `v3d->active_perfmon` pointer\nstale. This can lead to undefined behavior and instability.\n\nThis patch ensures that the active perfmon is stopped before being\ndestroyed, aligning with the behavior introduced in commit\n7d1fd3638ee3 (\"drm/v3d: Stop the active perfmon before being destroyed\").",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-58086"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/22e19c8c5f6b709f4ae40227392a30d57bac187d"
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    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/95036d4c01167568166108d42c2b0e9f8dbd7d2b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/eb0e0eca0eab93f310c6c37b8564049366704691"
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    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1c5673a2c8926adbb61f340c779b28e18188a8cd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f8805b12f477bd964e2820a87921c7b58cc2dee3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/21f1435b1e6b012a07c42f36b206d2b66fc8f13b"
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    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:52:36Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - The vulnerability is reached exclusively through DRM ioctls (`V3D_PERFMON_CREATE/DESTROY`, `V3D_SUBMIT_CL/CSD`) on the local `/dev/dri/renderD*` device node. No network or physical component is involved.\nAC:L - No race is required \u2014 the attacker performs a deterministic, fully self-controlled sequence (create perfmon, submit a job with it, wait for the fence, destroy it, submit another job) and additionally controls the freed object's slab size via `ncounters` and the reclaim window before the stale pointer is used.\nPR:L - The perfmon ioctls are `DRM_RENDER_ALLOW` with no `DRM_AUTH` or capability check, so any local unprivileged user with render-node access (standard for GUI/GPU users on Raspberry Pi OS, Android apps, embedded/kiosk V3D systems) can trigger it. No root or DRM master privilege is needed.\nUI:N - A single unprivileged process performs every step itself via ioctls on its own file descriptor. No victim action or interaction is required.\nS:U - The use-after-free corrupts kernel heap memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The stale `v3d->active_perfmon` is dereferenced after `kfree()`, reading `perfmon->ncounters` and `perfmon->values[]` from a slab slot the attacker can reclaim with a chosen object; `v3d_write_performance_query_result()` and `v3d_perfmon_get_values_ioctl()` can copy such freed-memory contents back to userspace, giving kernel memory disclosure.\nI:H - `v3d_perfmon_stop()` writes into the freed object \u2014 `mutex_lock()` stores the `current` task pointer into the owner field and `perfmon->values[i] += V3D_CORE_READ(...)` performs a read-modify-write at attacker-chosen offsets \u2014 over a slab slot of attacker-chosen size that can be re-occupied by a victim object, yielding a corruption primitive suitable for privilege escalation.\nA:H - Dereferencing the freed perfmon reliably oopses the kernel; the sibling fix for the identical root cause documents a fatal paging fault in `__mutex_lock` from the `v3d_bin` scheduler kthread, killing the GPU pipeline and panicking the machine."
    }
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}