ghsa-hgcx-34qp-j38m
Vulnerability from github
Published
2024-05-21 18:31
Modified
2024-05-21 18:31
Details
In the Linux kernel, the following vulnerability has been resolved:
nbd: fix uaf in nbd_open
Commit 4af5f2e03013 ("nbd: use blk_mq_alloc_disk and blk_cleanup_disk") cleans up disk by blk_cleanup_disk() and it won't set disk->private_data as NULL as before. UAF may be triggered in nbd_open() if someone tries to open nbd device right after nbd_put() since nbd has been free in nbd_dev_remove().
Fix this by implementing ->free_disk and free private data in it.
{
"affected": [],
"aliases": [
"CVE-2023-52837"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-21T16:15:21Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnbd: fix uaf in nbd_open\n\nCommit 4af5f2e03013 (\"nbd: use blk_mq_alloc_disk and\nblk_cleanup_disk\") cleans up disk by blk_cleanup_disk() and it won\u0027t set\ndisk-\u003eprivate_data as NULL as before. UAF may be triggered in nbd_open()\nif someone tries to open nbd device right after nbd_put() since nbd has\nbeen free in nbd_dev_remove().\n\nFix this by implementing -\u003efree_disk and free private data in it.",
"id": "GHSA-hgcx-34qp-j38m",
"modified": "2024-05-21T18:31:22Z",
"published": "2024-05-21T18:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52837"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/327462725b0f759f093788dfbcb2f1fd132f956b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4e9b3ec84dc97909876641dad14e0a2300d6c2a3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/56bd7901b5e9dbc9112036ea615ebcba1565fafe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/879947f4180bc6e83af64eb0515e0cf57fce15db"
}
],
"schema_version": "1.4.0",
"severity": []
}
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