cve-2021-46966
Vulnerability from cvelistv5
Published
2024-02-27 18:47
Modified
2024-11-04 11:56
Severity ?
EPSS score ?
Summary
ACPI: custom_method: fix potential use-after-free issue
References
{ "containers": { "adp": [ { "metrics": [ { "other": { "content": { "id": "CVE-2021-46966", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2024-06-28T17:00:55.492289Z", "version": "2.0.3" }, "type": "ssvc" } } ], "providerMetadata": { "dateUpdated": "2024-06-28T17:01:03.694Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "title": "CISA ADP Vulnrichment" }, { "providerMetadata": { "dateUpdated": "2024-08-04T05:17:42.993Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9be" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4b" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4b" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aa" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "drivers/acpi/custom_method.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "1d53ca5d1310", "status": "affected", "version": "4bda2b79a9d0", "versionType": "git" }, { "lessThan": "8b04d57f30ca", "status": "affected", "version": "5c12dadcbef8", "versionType": "git" }, { "lessThan": "90575d1d9311", "status": "affected", "version": "35b88a10535e", "versionType": "git" }, { "lessThan": "a5b26a2e362f", "status": "affected", "version": "e4467fb6ef54", "versionType": "git" }, { "lessThan": "72814a94c38a", "status": "affected", "version": "03d1571d9513", "versionType": "git" }, { "lessThan": "62dc2440ebb5", "status": "affected", "version": "03d1571d9513", "versionType": "git" }, { "lessThan": "f16737caf41f", "status": "affected", "version": "03d1571d9513", "versionType": "git" }, { "lessThan": "b7a5baaae212", "status": "affected", "version": "03d1571d9513", "versionType": "git" }, { "lessThan": "e483bb9a991b", "status": "affected", "version": "03d1571d9513", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "drivers/acpi/custom_method.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "5.4" }, { "lessThan": "5.4", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "4.4.*", "status": "unaffected", "version": "4.4.269", "versionType": "semver" }, { "lessThanOrEqual": "4.9.*", "status": "unaffected", "version": "4.9.269", "versionType": "semver" }, { "lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.233", "versionType": "semver" }, { "lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.191", "versionType": "semver" }, { "lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.118", "versionType": "semver" }, { "lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.36", "versionType": "semver" }, { "lessThanOrEqual": "5.11.*", "status": "unaffected", "version": "5.11.20", "versionType": "semver" }, { "lessThanOrEqual": "5.12.*", "status": "unaffected", "version": "5.12.3", "versionType": "semver" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix" } ] } ], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: custom_method: fix potential use-after-free issue\n\nIn cm_write(), buf is always freed when reaching the end of the\nfunction. If the requested count is less than table.length, the\nallocated buffer will be freed but subsequent calls to cm_write() will\nstill try to access it.\n\nRemove the unconditional kfree(buf) at the end of the function and\nset the buf to NULL in the -EINVAL error path to match the rest of\nfunction." } ], "providerMetadata": { "dateUpdated": "2024-11-04T11:56:48.746Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394" }, { "url": "https://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9be" }, { "url": "https://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23" }, { "url": "https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17" }, { "url": "https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4b" }, { "url": "https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203" }, { "url": "https://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4b" }, { "url": "https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234" }, { "url": "https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aa" } ], "title": "ACPI: custom_method: fix potential use-after-free issue", "x_generator": { "engine": "bippy-9e1c9544281a" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2021-46966", "datePublished": "2024-02-27T18:47:03.631Z", "dateReserved": "2024-02-27T18:42:55.943Z", "dateUpdated": "2024-11-04T11:56:48.746Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2021-46966\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-27T19:04:07.127\",\"lastModified\":\"2024-02-28T14:06:45.783\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nACPI: custom_method: fix potential use-after-free issue\\n\\nIn cm_write(), buf is always freed when reaching the end of the\\nfunction. If the requested count is less than table.length, the\\nallocated buffer will be freed but subsequent calls to cm_write() will\\nstill try to access it.\\n\\nRemove the unconditional kfree(buf) at the end of the function and\\nset the buf to NULL in the -EINVAL error path to match the rest of\\nfunction.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ACPI: custom_method: soluciona un posible problema de use-after-free En cm_write(), buf siempre se libera al llegar al final de la funci\u00f3n. Si el recuento solicitado es menor que table.length, el b\u00fafer asignado se liberar\u00e1, pero las llamadas posteriores a cm_write() seguir\u00e1n intentando acceder a \u00e9l. Elimine el kfree(buf) incondicional al final de la funci\u00f3n y establezca el buf en NULL en la ruta de error -EINVAL para que coincida con el resto de la funci\u00f3n.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9be\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}" } }
Loading...
Loading...
Sightings
Author | Source | Type | Date |
---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.