GHSA-WF2J-C3Q8-8C84
Vulnerability from github – Published: 2025-12-09 03:31 – Updated: 2026-08-04 12:34In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode()
During unmount process of nilfs2, nothing holds nilfs_root structure after nilfs2 detaches its writer in nilfs_detach_log_writer(). However, since nilfs_evict_inode() uses nilfs_root for some cleanup operations, it may cause use-after-free read if inodes are left in "garbage_list" and released by nilfs_dispose_list() at the end of nilfs_detach_log_writer().
Fix this issue by modifying nilfs_evict_inode() to only clear inode without additional metadata changes that use nilfs_root if the file system is degraded to read-only or the writer is detached.
{
"affected": [],
"aliases": [
"CVE-2023-53804"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-09T01:16:52Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode()\n\nDuring unmount process of nilfs2, nothing holds nilfs_root structure after\nnilfs2 detaches its writer in nilfs_detach_log_writer(). However, since\nnilfs_evict_inode() uses nilfs_root for some cleanup operations, it may\ncause use-after-free read if inodes are left in \"garbage_list\" and\nreleased by nilfs_dispose_list() at the end of nilfs_detach_log_writer().\n\nFix this issue by modifying nilfs_evict_inode() to only clear inode\nwithout additional metadata changes that use nilfs_root if the file system\nis degraded to read-only or the writer is detached.",
"id": "GHSA-wf2j-c3q8-8c84",
"modified": "2026-08-04T12:34:39Z",
"published": "2025-12-09T03:31:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53804"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/116d53f09ff52e6f98e3fe1f85d8898d6ba26c68"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2a782ea8ebd712a458466e3103e2881b4f886cb5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6b4205ea97901f822004e6c8d59484ccfda03faa"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9b5a04ac3ad9898c4745cba46ea26de74ba56a8e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/acc2a40e428f12780004e1e9fce4722d88f909fd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b8427b8522d9ede53015ba45a9978ba68d1162f5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f31e18131ee2ce80a4da5c808221d25b1ae9ad6d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fb8e8d58f116d069e5939e1f786ac84e7fa4533e"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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