{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47334", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T14:28:16.977Z", "datePublished": "2024-05-21T14:35:44.404Z", "dateUpdated": "2026-05-11T13:52:37.429Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:52:37.429Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc/libmasm/module: Fix two use after free in ibmasm_init_one\n\nIn ibmasm_init_one, it calls ibmasm_init_remote_input_dev().\nInside ibmasm_init_remote_input_dev, mouse_dev and keybd_dev are\nallocated by input_allocate_device(), and assigned to\nsp->remote.mouse_dev and sp->remote.keybd_dev respectively.\n\nIn the err_free_devices error branch of ibmasm_init_one,\nmouse_dev and keybd_dev are freed by input_free_device(), and return\nerror. Then the execution runs into error_send_message error branch\nof ibmasm_init_one, where ibmasm_free_remote_input_dev(sp) is called\nto unregister the freed sp->remote.mouse_dev and sp->remote.keybd_dev.\n\nMy patch add a \"error_init_remote\" label to handle the error of\nibmasm_init_remote_input_dev(), to avoid the uaf bugs." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/misc/ibmasm/module.c" ], "versions": [ { "version": "736ce43295682d060f2b93624b4a339f9af6aab1", "lessThan": "1512e7dc5eb08b7d92a12e2bfcd9cb8c4a1ec069", "status": "affected", "versionType": "git" }, { "version": "736ce43295682d060f2b93624b4a339f9af6aab1", "lessThan": "29ba8e2ba89ee2862a26d91204dd5fe77ceee25a", "status": "affected", "versionType": "git" }, { "version": "736ce43295682d060f2b93624b4a339f9af6aab1", "lessThan": "5b06ca113bf197aab2ab61288f42506e0049fbab", "status": "affected", "versionType": "git" }, { "version": "736ce43295682d060f2b93624b4a339f9af6aab1", "lessThan": "481a76d4749ee3a27f902ba213fdcbb4bb39720e", "status": "affected", "versionType": "git" }, { "version": "736ce43295682d060f2b93624b4a339f9af6aab1", "lessThan": "38660031e80eaa6cc9370b031c180612f414b00d", "status": "affected", "versionType": "git" }, { "version": "736ce43295682d060f2b93624b4a339f9af6aab1", "lessThan": "b9c87ce3bc6331f82811a8cf8e930423c22523a3", "status": "affected", "versionType": "git" }, { "version": "736ce43295682d060f2b93624b4a339f9af6aab1", "lessThan": "ef1067d2baa847d53c9988510d99fb494de4d12c", "status": "affected", "versionType": "git" }, { "version": "736ce43295682d060f2b93624b4a339f9af6aab1", "lessThan": "a7268e8a227d5a4f0bd1584f556246b0224ab274", "status": "affected", "versionType": "git" }, { "version": "736ce43295682d060f2b93624b4a339f9af6aab1", "lessThan": "7272b591c4cb9327c43443f67b8fbae7657dd9ae", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/misc/ibmasm/module.c" ], "versions": [ { "version": "2.6.16", "status": "affected" }, { "version": "0", "lessThan": "2.6.16", "status": "unaffected", "versionType": "semver" }, { "version": "4.4.276", "lessThanOrEqual": "4.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.276", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.240", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.198", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.134", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.52", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.12.19", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.13.4", "lessThanOrEqual": "5.13.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.14", "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": "2.6.16", "versionEndExcluding": "4.4.276" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "4.9.276" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "4.14.240" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "4.19.198" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "5.4.134" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "5.10.52" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "5.12.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "5.13.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "5.14" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/1512e7dc5eb08b7d92a12e2bfcd9cb8c4a1ec069" }, { "url": "https://git.kernel.org/stable/c/29ba8e2ba89ee2862a26d91204dd5fe77ceee25a" }, { "url": "https://git.kernel.org/stable/c/5b06ca113bf197aab2ab61288f42506e0049fbab" }, { "url": "https://git.kernel.org/stable/c/481a76d4749ee3a27f902ba213fdcbb4bb39720e" }, { "url": "https://git.kernel.org/stable/c/38660031e80eaa6cc9370b031c180612f414b00d" }, { "url": "https://git.kernel.org/stable/c/b9c87ce3bc6331f82811a8cf8e930423c22523a3" }, { "url": "https://git.kernel.org/stable/c/ef1067d2baa847d53c9988510d99fb494de4d12c" }, { "url": "https://git.kernel.org/stable/c/a7268e8a227d5a4f0bd1584f556246b0224ab274" }, { "url": "https://git.kernel.org/stable/c/7272b591c4cb9327c43443f67b8fbae7657dd9ae" } ], "title": "misc/libmasm/module: Fix two use after free in ibmasm_init_one", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2021-47334", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-05-21T18:44:43.256479Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:15:19.912Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.622Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/1512e7dc5eb08b7d92a12e2bfcd9cb8c4a1ec069", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/29ba8e2ba89ee2862a26d91204dd5fe77ceee25a", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/5b06ca113bf197aab2ab61288f42506e0049fbab", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/481a76d4749ee3a27f902ba213fdcbb4bb39720e", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/38660031e80eaa6cc9370b031c180612f414b00d", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/b9c87ce3bc6331f82811a8cf8e930423c22523a3", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/ef1067d2baa847d53c9988510d99fb494de4d12c", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/a7268e8a227d5a4f0bd1584f556246b0224ab274", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/7272b591c4cb9327c43443f67b8fbae7657dd9ae", "tags": [ "x_transferred" ] } ] } ] } }