ghsa-rjr4-cj33-9qjx
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
ASoC: mediatek: mt8195: Add platform entry for ETDM1_OUT_BE dai link
Commit e70b8dd26711 ("ASoC: mediatek: mt8195: Remove afe-dai component and rework codec link") removed the codec entry for the ETDM1_OUT_BE dai link entirely instead of replacing it with COMP_EMPTY(). This worked by accident as the remaining COMP_EMPTY() platform entry became the codec entry, and the platform entry became completely empty, effectively the same as COMP_DUMMY() since snd_soc_fill_dummy_dai() doesn't do anything for platform entries.
This causes a KASAN out-of-bounds warning in mtk_soundcard_common_probe() in sound/soc/mediatek/common/mtk-soundcard-driver.c:
for_each_card_prelinks(card, i, dai_link) {
if (adsp_node && !strncmp(dai_link->name, "AFE_SOF", strlen("AFE_SOF")))
dai_link->platforms->of_node = adsp_node;
else if (!dai_link->platforms->name && !dai_link->platforms->of_node)
dai_link->platforms->of_node = platform_node;
}
where the code expects the platforms array to have space for at least one entry.
Add an COMP_EMPTY() entry so that dai_link->platforms has space.
{
"affected": [],
"aliases": [
"CVE-2024-42088"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-29T17:15:11Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: mediatek: mt8195: Add platform entry for ETDM1_OUT_BE dai link\n\nCommit e70b8dd26711 (\"ASoC: mediatek: mt8195: Remove afe-dai component\nand rework codec link\") removed the codec entry for the ETDM1_OUT_BE\ndai link entirely instead of replacing it with COMP_EMPTY(). This worked\nby accident as the remaining COMP_EMPTY() platform entry became the codec\nentry, and the platform entry became completely empty, effectively the\nsame as COMP_DUMMY() since snd_soc_fill_dummy_dai() doesn\u0027t do anything\nfor platform entries.\n\nThis causes a KASAN out-of-bounds warning in mtk_soundcard_common_probe()\nin sound/soc/mediatek/common/mtk-soundcard-driver.c:\n\n\tfor_each_card_prelinks(card, i, dai_link) {\n\t\tif (adsp_node \u0026\u0026 !strncmp(dai_link-\u003ename, \"AFE_SOF\", strlen(\"AFE_SOF\")))\n\t\t\tdai_link-\u003eplatforms-\u003eof_node = adsp_node;\n\t\telse if (!dai_link-\u003eplatforms-\u003ename \u0026\u0026 !dai_link-\u003eplatforms-\u003eof_node)\n\t\t\tdai_link-\u003eplatforms-\u003eof_node = platform_node;\n\t}\n\nwhere the code expects the platforms array to have space for at least one entry.\n\nAdd an COMP_EMPTY() entry so that dai_link-\u003eplatforms has space.",
"id": "GHSA-rjr4-cj33-9qjx",
"modified": "2024-07-29T18:30:42Z",
"published": "2024-07-29T18:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42088"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/282a4482e198e03781c152c88aac8aa382ef9a55"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/42b9ab7a4d7e6c5efd71847541e4fcc213585aad"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
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