ghsa-8f8j-69c8-v223
Vulnerability from github
Published
2024-02-27 21:31
Modified
2024-02-27 21:31
Details
In the Linux kernel, the following vulnerability has been resolved:
ACPI: custom_method: fix potential use-after-free issue
In cm_write(), buf is always freed when reaching the end of the function. If the requested count is less than table.length, the allocated buffer will be freed but subsequent calls to cm_write() will still try to access it.
Remove the unconditional kfree(buf) at the end of the function and set the buf to NULL in the -EINVAL error path to match the rest of function.
{
"affected": [],
"aliases": [
"CVE-2021-46966"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-27T19:04:07Z",
"severity": null
},
"details": "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.",
"id": "GHSA-8f8j-69c8-v223",
"modified": "2024-02-27T21:31:27Z",
"published": "2024-02-27T21:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46966"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9be"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aa"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4b"
}
],
"schema_version": "1.4.0",
"severity": []
}
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