{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2022-48702",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "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"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "1da177e4c3f4",
                                            "version_value": "637c5310acb4"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "4.9.328",
                                                        "lessThanOrEqual": "4.9.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "4.14.293",
                                                        "lessThanOrEqual": "4.14.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "4.19.258",
                                                        "lessThanOrEqual": "4.19.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.4.213",
                                                        "lessThanOrEqual": "5.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.10.143",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.68",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.19.9",
                                                        "lessThanOrEqual": "5.19.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.0",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/637c5310acb48fffcc5657568db3f3e9bc719bfa",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/637c5310acb48fffcc5657568db3f3e9bc719bfa"
            },
            {
                "url": "https://git.kernel.org/stable/c/6b0e260ac3cf289e38446552461caa65e6dab275",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/6b0e260ac3cf289e38446552461caa65e6dab275"
            },
            {
                "url": "https://git.kernel.org/stable/c/88aac6684cf8bc885cca15463cb4407e91f28ff7",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/88aac6684cf8bc885cca15463cb4407e91f28ff7"
            },
            {
                "url": "https://git.kernel.org/stable/c/45321a7d02b7cf9b3f97e3987fc1e4d649b82da2",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/45321a7d02b7cf9b3f97e3987fc1e4d649b82da2"
            },
            {
                "url": "https://git.kernel.org/stable/c/39a90720f3abe96625d1224e7a7463410875de4c",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/39a90720f3abe96625d1224e7a7463410875de4c"
            },
            {
                "url": "https://git.kernel.org/stable/c/45814a53514e10a8014906c882e0d0d38df39cc1",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/45814a53514e10a8014906c882e0d0d38df39cc1"
            },
            {
                "url": "https://git.kernel.org/stable/c/4204a01ffce97cae1d59edc5848f02be5b2b9178",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/4204a01ffce97cae1d59edc5848f02be5b2b9178"
            },
            {
                "url": "https://git.kernel.org/stable/c/d29f59051d3a07b81281b2df2b8c9dfe4716067f",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d29f59051d3a07b81281b2df2b8c9dfe4716067f"
            }
        ]
    },
    "generator": {
        "engine": "bippy-a5840b7849dd"
    }
}