{
    "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"
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    }
}