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vuln-cve/data/2023/53xxx/CVE-2023-53854.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2023-53854",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-12-09T01:27:17.828Z",
"datePublished": "2025-12-09T01:30:19.746Z",
"dateUpdated": "2026-05-11T19:52:48.131Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T19:52:48.131Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: mediatek: mt8186: Fix use-after-free in driver remove path\n\nWhen devm runs function in the \"remove\" path for a device it runs them\nin the reverse order. That means that if you have parts of your driver\nthat aren't using devm or are using \"roll your own\" devm w/\ndevm_add_action_or_reset() you need to keep that in mind.\n\nThe mt8186 audio driver didn't quite get this right. Specifically, in\nmt8186_init_clock() it called mt8186_audsys_clk_register() and then\nwent on to call a bunch of other devm function. The caller of\nmt8186_init_clock() used devm_add_action_or_reset() to call\nmt8186_deinit_clock() but, because of the intervening devm functions,\nthe order was wrong.\n\nSpecifically at probe time, the order was:\n1. mt8186_audsys_clk_register()\n2. afe_priv->clk = devm_kcalloc(...)\n3. afe_priv->clk[i] = devm_clk_get(...)\n\nAt remove time, the order (which should have been 3, 2, 1) was:\n1. mt8186_audsys_clk_unregister()\n3. Free all of afe_priv->clk[i]\n2. Free afe_priv->clk\n\nThe above seemed to be causing a use-after-free. Luckily, it's easy to\nfix this by simply using devm more correctly. Let's move the\ndevm_add_action_or_reset() to the right place. In addition to fixing\nthe use-after-free, code inspection shows that this fixes a leak\n(missing call to mt8186_audsys_clk_unregister()) that would have\nhappened if any of the syscon_regmap_lookup_by_phandle() calls in\nmt8186_init_clock() had failed."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"sound/soc/mediatek/mt8186/mt8186-afe-clk.c",
"sound/soc/mediatek/mt8186/mt8186-afe-clk.h",
"sound/soc/mediatek/mt8186/mt8186-afe-pcm.c",
"sound/soc/mediatek/mt8186/mt8186-audsys-clk.c",
"sound/soc/mediatek/mt8186/mt8186-audsys-clk.h"
],
"versions": [
{
"version": "55b423d5623ccd6785429431c2cf5f3e073b73ba",
"lessThan": "3e56a1c04882852e3e7d6c59756a16211ebbc457",
"status": "affected",
"versionType": "git"
},
{
"version": "55b423d5623ccd6785429431c2cf5f3e073b73ba",
"lessThan": "dffd9e2b57cb845930fa885aa634a847ba2130dd",
"status": "affected",
"versionType": "git"
},
{
"version": "55b423d5623ccd6785429431c2cf5f3e073b73ba",
"lessThan": "a93d2afd3f77a7331271a0f25c6a11003db69b3c",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"sound/soc/mediatek/mt8186/mt8186-afe-clk.c",
"sound/soc/mediatek/mt8186/mt8186-afe-clk.h",
"sound/soc/mediatek/mt8186/mt8186-afe-pcm.c",
"sound/soc/mediatek/mt8186/mt8186-audsys-clk.c",
"sound/soc/mediatek/mt8186/mt8186-audsys-clk.h"
],
"versions": [
{
"version": "6.0",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.0",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.30",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.3.4",
"lessThanOrEqual": "6.3.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.4",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.0",
"versionEndExcluding": "6.1.30"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.0",
"versionEndExcluding": "6.3.4"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.0",
"versionEndExcluding": "6.4"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/3e56a1c04882852e3e7d6c59756a16211ebbc457"
},
{
"url": "https://git.kernel.org/stable/c/dffd9e2b57cb845930fa885aa634a847ba2130dd"
},
{
"url": "https://git.kernel.org/stable/c/a93d2afd3f77a7331271a0f25c6a11003db69b3c"
}
],
"title": "ASoC: mediatek: mt8186: Fix use-after-free in driver remove path",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}