GHSA-MXFP-7RQW-MQHC
Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30In the Linux kernel, the following vulnerability has been resolved:
block: fix blktrace debugfs entries leakage
Commit 99d055b4fd4b ("block: remove per-disk debugfs files in blk_unregister_queue") moves blk_trace_shutdown() from blk_release_queue() to blk_unregister_queue(), this is safe if blktrace is created through sysfs, however, there is a regression in corner case.
blktrace can still be enabled after del_gendisk() through ioctl if the disk is opened before del_gendisk(), and if blktrace is not shutdown through ioctl before closing the disk, debugfs entries will be leaked.
Fix this problem by shutdown blktrace in disk_release(), this is safe because blk_trace_remove() is reentrant.
{
"affected": [],
"aliases": [
"CVE-2023-54209"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-30T13:16:09Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix blktrace debugfs entries leakage\n\nCommit 99d055b4fd4b (\"block: remove per-disk debugfs files in\nblk_unregister_queue\") moves blk_trace_shutdown() from\nblk_release_queue() to blk_unregister_queue(), this is safe if blktrace\nis created through sysfs, however, there is a regression in corner\ncase.\n\nblktrace can still be enabled after del_gendisk() through ioctl if\nthe disk is opened before del_gendisk(), and if blktrace is not shutdown\nthrough ioctl before closing the disk, debugfs entries will be leaked.\n\nFix this problem by shutdown blktrace in disk_release(), this is safe\nbecause blk_trace_remove() is reentrant.",
"id": "GHSA-mxfp-7rqw-mqhc",
"modified": "2025-12-30T15:30:31Z",
"published": "2025-12-30T15:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54209"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7149e57cf01184fba175589f8fbe9fbf33be02e1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/942e81650b81b4ca62f1d8c61de455c9e7c7e6ca"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/aa07e56c6a9c7558165690d14eed4fe8babf34fb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dd7de3704af9989b780693d51eaea49a665bd9c2"
}
],
"schema_version": "1.4.0",
"severity": []
}
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