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nvd-json-data-feeds/CVE-2022/CVE-2022-487xx/CVE-2022-48702.json
cad-safe-bot 4a84132ab1 Auto-Update: 2025-03-05T17:00:20.315796+00:00
2025-03-05 17:03:50 +00:00

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{
"id": "CVE-2022-48702",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-05-03T16:15:08.593",
"lastModified": "2025-03-05T15:11:27.097",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: emu10k1: Fix out of bounds access in snd_emu10k1_pcm_channel_alloc()\n\nThe voice allocator sometimes begins allocating from near the end of the\narray and then wraps around, however snd_emu10k1_pcm_channel_alloc()\naccesses the newly allocated voices as if it never wrapped around.\n\nThis results in out of bounds access if the first voice has a high enough\nindex so that first_voice + requested_voice_count > NUM_G (64).\nThe more voices are requested, the more likely it is for this to occur.\n\nThis was initially discovered using PipeWire, however it can be reproduced\nby calling aplay multiple times with 16 channels:\naplay -r 48000 -D plughw:CARD=Live,DEV=3 -c 16 /dev/zero\n\nUBSAN: array-index-out-of-bounds in sound/pci/emu10k1/emupcm.c:127:40\nindex 65 is out of range for type 'snd_emu10k1_voice [64]'\nCPU: 1 PID: 31977 Comm: aplay Tainted: G W IOE 6.0.0-rc2-emu10k1+ #7\nHardware name: ASUSTEK COMPUTER INC P5W DH Deluxe/P5W DH Deluxe, BIOS 3002 07/22/2010\nCall Trace:\n<TASK>\ndump_stack_lvl+0x49/0x63\ndump_stack+0x10/0x16\nubsan_epilogue+0x9/0x3f\n__ubsan_handle_out_of_bounds.cold+0x44/0x49\nsnd_emu10k1_playback_hw_params+0x3bc/0x420 [snd_emu10k1]\nsnd_pcm_hw_params+0x29f/0x600 [snd_pcm]\nsnd_pcm_common_ioctl+0x188/0x1410 [snd_pcm]\n? exit_to_user_mode_prepare+0x35/0x170\n? do_syscall_64+0x69/0x90\n? syscall_exit_to_user_mode+0x26/0x50\n? do_syscall_64+0x69/0x90\n? exit_to_user_mode_prepare+0x35/0x170\nsnd_pcm_ioctl+0x27/0x40 [snd_pcm]\n__x64_sys_ioctl+0x95/0xd0\ndo_syscall_64+0x5c/0x90\n? do_syscall_64+0x69/0x90\n? do_syscall_64+0x69/0x90\nentry_SYSCALL_64_after_hwframe+0x63/0xcd"
},
{
"lang": "es",
"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ALSA: emu10k1: corrige el acceso fuera de los l\u00edmites en snd_emu10k1_pcm_channel_alloc() El asignador de voz a veces comienza a asignar desde cerca del final de la matriz y luego regresa, sin embargo, snd_emu10k1_pcm_channel_alloc() accede al nuevo asign\u00f3 voces como si nunca hubiera terminado. Esto da como resultado un acceso fuera de los l\u00edmites si la primera voz tiene un \u00edndice lo suficientemente alto como para que primera_voz + recuento_de_voces_solicitadas &gt; NUM_G (64). Cuantas m\u00e1s voces se soliciten, m\u00e1s probabilidades habr\u00e1 de que esto ocurra. Esto se descubri\u00f3 inicialmente usando PipeWire, sin embargo, se puede reproducir llamando a aplay varias veces con 16 canales: aplay -r 48000 -D plughw:CARD=Live,DEV=3 -c 16 /dev/zero UBSAN: array-index-out -of-bounds en sound/pci/emu10k1/emupcm.c:127:40 el \u00edndice 65 est\u00e1 fuera de rango para el tipo 'snd_emu10k1_voice [64]' CPU: 1 PID: 31977 Comm: aplay Contaminado: GW IOE 6.0.0-rc2 -emu10k1+ #7 Nombre del hardware: ASUSTEK COMPUTER INC P5W DH Deluxe/P5W DH Deluxe, BIOS 3002 22/07/2010 Seguimiento de llamadas: dump_stack_lvl+0x49/0x63 dump_stack+0x10/0x16 ubsan_epilogue+0x9/0x3f __ubsan_handle_out_of_bounds.cold + 0x44/0x49 snd_emu10k1_playback_hw_params+0x3bc/0x420 [snd_emu10k1] snd_pcm_hw_params+0x29f/0x600 [snd_pcm] snd_pcm_common_ioctl+0x188/0x1410 [snd_pcm] ? exit_to_user_mode_prepare+0x35/0x170? do_syscall_64+0x69/0x90? syscall_exit_to_user_mode+0x26/0x50? do_syscall_64+0x69/0x90? exit_to_user_mode_prepare+0x35/0x170 snd_pcm_ioctl+0x27/0x40 [snd_pcm] __x64_sys_ioctl+0x95/0xd0 do_syscall_64+0x5c/0x90 ? do_syscall_64+0x69/0x90? do_syscall_64+0x69/0x90 entrada_SYSCALL_64_after_hwframe+0x63/0xcd"
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"cvssData": {
"version": "3.1",
"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",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9
}
]
},
"weaknesses": [
{
"source": "nvd@nist.gov",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-129"
}
]
}
],
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