github - ghsa-934p-m4fh-22q3

ghsa-934p-m4fh-22q3

Vulnerability from github

Published

2024-07-12 15:31

Modified

2024-08-29 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

ext4: do not create EA inode under buffer lock

ext4_xattr_set_entry() creates new EA inodes while holding buffer lock on the external xattr block. This is problematic as it nests all the allocation locking (which acquires locks on other buffers) under the buffer lock. This can even deadlock when the filesystem is corrupted and e.g. quota file is setup to contain xattr block as data block. Move the allocation of EA inode out of ext4_xattr_set_entry() into the callers.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-40972"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-12T13:15:18Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: do not create EA inode under buffer lock\n\next4_xattr_set_entry() creates new EA inodes while holding buffer lock\non the external xattr block. This is problematic as it nests all the\nallocation locking (which acquires locks on other buffers) under the\nbuffer lock. This can even deadlock when the filesystem is corrupted and\ne.g. quota file is setup to contain xattr block as data block. Move the\nallocation of EA inode out of ext4_xattr_set_entry() into the callers.",
  "id": "GHSA-934p-m4fh-22q3",
  "modified": "2024-08-29T18:31:34Z",
  "published": "2024-07-12T15:31:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-40972"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0752e7fb549d90c33b4d4186f11cfd25a556d1dd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a46ef234756dca04623b7591e8ebb3440622f0b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/111103907234bffd0a34fba070ad9367de058752"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/737fb7853acd5bc8984f6f42e4bfba3334be8ae1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2024-40972

Vulnerability from cvelistv5

Published

2024-07-12 12:32

Modified

2024-09-11 17:34

Severity ?

Summary

ext4: do not create EA inode under buffer lock

References

▼	URL	Tags
	https://git.kernel.org/stable/c/0752e7fb549d90c33b4d4186f11cfd25a556d1dd
	https://git.kernel.org/stable/c/737fb7853acd5bc8984f6f42e4bfba3334be8ae1
	https://git.kernel.org/stable/c/111103907234bffd0a34fba070ad9367de058752
	https://git.kernel.org/stable/c/0a46ef234756dca04623b7591e8ebb3440622f0b

Impacted products

▼	Vendor	Product
	Linux	Linux
	Linux	Linux

Show details on NVD website

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Tags

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Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
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