482 lines
23 KiB
JSON
482 lines
23 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2024-53165",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-11-19T17:17:25.004Z",
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"datePublished": "2024-12-27T13:49:11.401Z",
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"dateUpdated": "2026-10-15T00:58:59.127Z"
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsh: intc: Fix use-after-free bug in register_intc_controller()\n\nIn the error handling for this function, d is freed without ever\nremoving it from intc_list which would lead to a use after free.\nTo fix this, let's only add it to the list after everything has\nsucceeded."
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"value": "AV:L - `register_intc_controller()` is SuperH platform interrupt-controller boot code with no network, packet, or remote-peer input; the only user-visible surface tied to the freed object is the local sysfs attribute `/sys/devices/system/intc/intc.N/name` and local suspend/resume activity, so exposure is confined to the local system.\nAC:H - The dangling list entry is created only when a `GFP_NOWAIT`/`kcalloc` allocation or `ioremap()` fails inside an `__init` function during early boot, before userspace exists, so the triggering memory-pressure condition is entirely outside any attacker's influence, and it additionally requires SuperH hardware with `CONFIG_SH_INTC`.\nPR:N - No privileges or credentials are involved at any point — the freed `intc_desc_int` is dereferenced by the kernel itself at `device_initcall` time (`register_intc_devs()`) long before any login, and the resulting sysfs `name` attribute that reads the freed object is world-readable (`S_IRUGO`).\nUI:N - Once the error path executes, the stale list entry is dereferenced automatically during the remainder of boot and on every subsequent suspend/resume cycle; no victim action is needed.\nS:U - The use-after-free is confined to kernel heap objects managed by the SH interrupt-controller driver; no VM, IOMMU, or other security-authority boundary is crossed.\nC:H - The freed `intc_desc_int` is read back after release — `show_intc_name()` dereferences `d->chip.name` from freed slab memory through a world-readable sysfs file, and list traversal reads `d->list.next` out of reallocated memory, so reclaimed heap contents can be disclosed.\nI:H - `register_intc_devs()` performs `device_register(&d->dev)` on the freed object, writing kobject/device state into reclaimed slab memory and linking it into driver-core lists, which is a write primitive into attacker-influenceable reused heap; per UAF guidance this is High.\nA:H - Traversing `intc_list` through a freed `list_head` follows a stale/overwritten `next` pointer into arbitrary memory, producing an oops or panic, and it corrupts the suspend/resume syscore paths for the interrupt controller."
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|
|
{
|
|
"status": "affected",
|
|
"version": "0",
|
|
"lessThan": "V3.2",
|
|
"versionType": "custom"
|
|
}
|
|
],
|
|
"defaultStatus": "unknown"
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
|
|
},
|
|
{
|
|
"url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
} |