cve-2022-49897
Vulnerability from cvelistv5
Published
2025-05-01 14:10
Modified
2025-05-04 08:48
Severity ?
EPSS score ?
Summary
fscrypt: fix keyring memory leak on mount failure
References
{ "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "fs/crypto/keyring.c", "fs/super.c", "include/linux/fscrypt.h" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "29997a6fa60de1de2fa0de471e7652efa6e95868", "status": "affected", "version": "391cceee6d435e616f68631e68f5b32d480b1e67", "versionType": "git" }, { "lessThan": "cff805b1518f38d57866065343db2285f2dcd5ab", "status": "affected", "version": "e6f4fd85ef1ee6ab356bfbd64df28c1cb73aee7e", "versionType": "git" }, { "lessThan": "0b1747653b102c555bac745ebe5ca86cdd20e43f", "status": "affected", "version": "68d15d6558a386f46d815a6ac39edecad713a1bf", "versionType": "git" }, { "lessThan": "ccd30a476f8e864732de220bd50e6f372f5ebcab", "status": "affected", "version": "d7e7b9af104c7b389a0c21eb26532511bce4b510", "versionType": "git" } ] }, { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "fs/crypto/keyring.c", "fs/super.c", "include/linux/fscrypt.h" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux" } ], "cpeApplicability": [ { "nodes": [ { "cpeMatch": [], "negate": false, "operator": "OR" } ] } ], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfscrypt: fix keyring memory leak on mount failure\n\nCommit d7e7b9af104c (\"fscrypt: stop using keyrings subsystem for\nfscrypt_master_key\") moved the keyring destruction from __put_super() to\ngeneric_shutdown_super() so that the filesystem\u0027s block device(s) are\nstill available. Unfortunately, this causes a memory leak in the case\nwhere a mount is attempted with the test_dummy_encryption mount option,\nbut the mount fails after the option has already been processed.\n\nTo fix this, attempt the keyring destruction in both places." } ], "providerMetadata": { "dateUpdated": "2025-05-04T08:48:01.912Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/29997a6fa60de1de2fa0de471e7652efa6e95868" }, { "url": "https://git.kernel.org/stable/c/cff805b1518f38d57866065343db2285f2dcd5ab" }, { "url": "https://git.kernel.org/stable/c/0b1747653b102c555bac745ebe5ca86cdd20e43f" }, { "url": "https://git.kernel.org/stable/c/ccd30a476f8e864732de220bd50e6f372f5ebcab" } ], "title": "fscrypt: fix keyring memory leak on mount failure", "x_generator": { "engine": "bippy-1.2.0" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2022-49897", "datePublished": "2025-05-01T14:10:39.179Z", "dateReserved": "2025-05-01T14:05:17.244Z", "dateUpdated": "2025-05-04T08:48:01.912Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2022-49897\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:14.747\",\"lastModified\":\"2025-05-02T13:52:51.693\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfscrypt: fix keyring memory leak on mount failure\\n\\nCommit d7e7b9af104c (\\\"fscrypt: stop using keyrings subsystem for\\nfscrypt_master_key\\\") moved the keyring destruction from __put_super() to\\ngeneric_shutdown_super() so that the filesystem\u0027s block device(s) are\\nstill available. Unfortunately, this causes a memory leak in the case\\nwhere a mount is attempted with the test_dummy_encryption mount option,\\nbut the mount fails after the option has already been processed.\\n\\nTo fix this, attempt the keyring destruction in both places.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fscrypt: correcci\u00f3n de fuga de memoria del llavero en caso de fallo de montaje. El commit d7e7b9af104c (\\\"fscrypt: dejar de usar el subsistema de llaveros para fscrypt_master_key\\\") traslad\u00f3 la destrucci\u00f3n del llavero de __put_super() a generic_shutdown_super() para que los dispositivos de bloque del sistema de archivos sigan disponibles. Desafortunadamente, esto provoca una fuga de memoria si se intenta un montaje con la opci\u00f3n test_dummy_encryption, pero el montaje falla despu\u00e9s de que la opci\u00f3n ya se haya procesado. Para solucionarlo, intente la destrucci\u00f3n del llavero en ambos lugares.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0b1747653b102c555bac745ebe5ca86cdd20e43f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/29997a6fa60de1de2fa0de471e7652efa6e95868\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ccd30a476f8e864732de220bd50e6f372f5ebcab\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cff805b1518f38d57866065343db2285f2dcd5ab\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}" } }
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