375 lines
17 KiB
JSON
375 lines
17 KiB
JSON
{
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"cveId": "CVE-2022-48716",
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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": "2024-06-20T11:09:39.050Z",
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"datePublished": "2024-06-20T11:13:09.315Z",
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"dateUpdated": "2026-08-05T08:51:53.731Z"
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: codecs: wcd938x: fix incorrect used of portid\n\nMixer controls have the channel id in mixer->reg, which is not same\nas port id. port id should be derived from chan_info array.\nSo fix this. Without this, its possible that we could corrupt\nstruct wcd938x_sdw_priv by accessing port_map array out of range\nwith channel id instead of port id."
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"value": "AV:L - The bug is reached by writing ALSA mixer controls (e.g. DSD_L/DSD_R Switch) via ioctl on /dev/snd/controlC*, a local device-file interface; it is not reachable from the network stack or remote protocols.\nAC:L - An attacker who can open the sound control device can reliably toggle the fixed DSD mixer controls; no race, non-deterministic state, or other condition outside attacker control is required.\nPR:L - snd_ctl_elem_write performs no capability check; access depends only on /dev/snd/controlC* permissions, typically granted to unprivileged audio-group users on affected Qualcomm devices (phones, Chromebooks, ThinkPad X13s), not real root.\nUI:N - The attacker triggers the OOB write directly by writing the mixer control; no separate victim action is required.\nS:U - This is standard in-kernel memory corruption of wcd938x_sdw_priv with impact confined to the host kernel's security authority, not a VM/IOMMU/sandbox boundary cross.\nC:H - The OOB write corrupts the adjacent ch_info pointer inside wcd938x_sdw_priv; subsequent use of that corrupted pointer enables kernel memory disclosure primitives, so confidentiality impact is High.\nI:H - Out-of-bounds write into port_config[port_num] (port 5 / DSD) overwrites trailing structure fields and yields kernel memory corruption exploitable for integrity compromise and control-flow hijacking.\nA:H - Dereferencing the corrupted ch_info pointer after the OOB write can oops/panic the kernel, causing a full availability loss."
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