mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
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53 lines
3.1 KiB
JSON
53 lines
3.1 KiB
JSON
{
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"id": "CVE-2022-48714",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-06-20T11:15:55.033",
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"lastModified": "2024-11-21T07:33:50.707",
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"vulnStatus": "Awaiting Analysis",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Use VM_MAP instead of VM_ALLOC for ringbuf\n\nAfter commit 2fd3fb0be1d1 (\"kasan, vmalloc: unpoison VM_ALLOC pages\nafter mapping\"), non-VM_ALLOC mappings will be marked as accessible\nin __get_vm_area_node() when KASAN is enabled. But now the flag for\nringbuf area is VM_ALLOC, so KASAN will complain out-of-bound access\nafter vmap() returns. Because the ringbuf area is created by mapping\nallocated pages, so use VM_MAP instead.\n\nAfter the change, info in /proc/vmallocinfo also changes from\n [start]-[end] 24576 ringbuf_map_alloc+0x171/0x290 vmalloc user\nto\n [start]-[end] 24576 ringbuf_map_alloc+0x171/0x290 vmap user"
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},
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{
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"lang": "es",
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"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: bpf: use VM_MAP en lugar de VM_ALLOC para ringbuf Despu\u00e9s del commit 2fd3fb0be1d1 (\"kasan, vmalloc: despoisone las p\u00e1ginas VM_ALLOC despu\u00e9s del mapeo\"), los mapeos que no sean VM_ALLOC se marcar\u00e1n como accesibles en __get_vm_area_node( ) cuando KASAN est\u00e1 habilitado. Pero ahora el indicador para el \u00e1rea ringbuf es VM_ALLOC, por lo que KASAN se quejar\u00e1 del acceso fuera de los l\u00edmites despu\u00e9s de que regrese vmap(). Debido a que el \u00e1rea ringbuf se crea asignando p\u00e1ginas asignadas, use VM_MAP en su lugar. Despu\u00e9s del cambio, la informaci\u00f3n en /proc/vmallocinfo tambi\u00e9n cambia de [inicio]-[fin] 24576 ringbuf_map_alloc+0x171/0x290 usuario vmalloc a [inicio]-[fin] 24576 ringbuf_map_alloc+0x171/0x290 usuario vmap"
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}
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],
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"metrics": {},
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/5e457aeab52a5947619e1f18047f4d2f3212b3eb",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/6304a613a97d6dcd49b93fbad31e9f39d1e138d6",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/b293dcc473d22a62dc6d78de2b15e4f49515db56",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/d578933f6226d5419af9306746efa1c693cbaf9c",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/5e457aeab52a5947619e1f18047f4d2f3212b3eb",
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"source": "af854a3a-2127-422b-91ae-364da2661108"
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},
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{
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"url": "https://git.kernel.org/stable/c/6304a613a97d6dcd49b93fbad31e9f39d1e138d6",
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"source": "af854a3a-2127-422b-91ae-364da2661108"
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},
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{
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"url": "https://git.kernel.org/stable/c/b293dcc473d22a62dc6d78de2b15e4f49515db56",
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"source": "af854a3a-2127-422b-91ae-364da2661108"
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},
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{
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"url": "https://git.kernel.org/stable/c/d578933f6226d5419af9306746efa1c693cbaf9c",
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"source": "af854a3a-2127-422b-91ae-364da2661108"
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}
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]
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} |