ghsa-92cr-jqq3-99x4
Vulnerability from github
Published
2024-08-22 06:30
Modified
2024-08-23 03:30
Severity ?
Details
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: fix memory leak during stateful obj update
stateful objects can be updated from the control plane. The transaction logic allocates a temporary object for this purpose.
The ->init function was called for this object, so plain kfree() leaks resources. We must call ->destroy function of the object.
nft_obj_destroy does this, but it also decrements the module refcount, but the update path doesn't increment it.
To avoid special-casing the update object release, do module_get for the update case too and release it via nft_obj_destroy().
{
"affected": [],
"aliases": [
"CVE-2022-48933"
],
"database_specific": {
"cwe_ids": [
"CWE-401"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-22T04:15:16Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: fix memory leak during stateful obj update\n\nstateful objects can be updated from the control plane.\nThe transaction logic allocates a temporary object for this purpose.\n\nThe -\u003einit function was called for this object, so plain kfree() leaks\nresources. We must call -\u003edestroy function of the object.\n\nnft_obj_destroy does this, but it also decrements the module refcount,\nbut the update path doesn\u0027t increment it.\n\nTo avoid special-casing the update object release, do module_get for\nthe update case too and release it via nft_obj_destroy().",
"id": "GHSA-92cr-jqq3-99x4",
"modified": "2024-08-23T03:30:59Z",
"published": "2024-08-22T06:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48933"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/34bb90e407e3288f610558beaae54ecaa32b11c4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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