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vuln-cve/data/2024/58xxx/CVE-2024-58086.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2024-58086",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-03-06T15:52:09.184Z",
"datePublished": "2025-03-06T16:28:23.042Z",
"dateUpdated": "2026-11-10T12:34:18.036Z"
},
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"dateUpdated": "2026-08-05T11:47:37.348Z"
},
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{
"lang": "en",
"value": "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\")."
}
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{
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH"
},
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{
"lang": "en",
"value": "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 — 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 — `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 — 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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}
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"title": "drm/v3d: Stop active perfmon if it is being destroyed",
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