Vulnerability-Lookup

GHSA-934P-M4FH-22Q3

Vulnerability from github – Published: 2024-07-12 15:31 – Updated: 2025-11-04 00:30

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.

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-40972"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-667"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-12T13:15:18Z",
    "severity": "MODERATE"
  },
  "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": "2025-11-04T00:30:56Z",
  "published": "2024-07-12T15:31:29Z",
  "references": [
    {
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-40972"
    },
    {
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      "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"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
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  "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"
    }
  ]
}

CVE-2024-40972 (GCVE-0-2024-40972)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:32 – Updated: 2026-01-05 10:37

Title

ext4: do not create EA inode under buffer lock

Summary

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.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/0752e7fb549d90c33…
	https://git.kernel.org/stable/c/737fb7853acd5bc89…
	https://git.kernel.org/stable/c/111103907234bffd0…
	https://git.kernel.org/stable/c/0a46ef234756dca04…

Impacted products

Vendor

Product

Version

Linux

Affected: e50e5129f384ae282adebfb561189cdb19b81cee , < 0752e7fb549d90c33b4d4186f11cfd25a556d1dd (git)
Affected: e50e5129f384ae282adebfb561189cdb19b81cee , < 737fb7853acd5bc8984f6f42e4bfba3334be8ae1 (git)
Affected: e50e5129f384ae282adebfb561189cdb19b81cee , < 111103907234bffd0a34fba070ad9367de058752 (git)
Affected: e50e5129f384ae282adebfb561189cdb19b81cee , < 0a46ef234756dca04623b7591e8ebb3440622f0b (git)

Linux

Affected: 4.13
Unaffected: 0 , < 4.13 (semver)
Unaffected: 6.1.107 , ≤ 6.1.* (semver)
Unaffected: 6.6.47 , ≤ 6.6.* (semver)
Unaffected: 6.9.7 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)

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JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-934P-M4FH-22Q3

CVE-2024-40972 (GCVE-0-2024-40972)

Tags

Sightings

Nomenclature