CVE-2024-39494 (GCVE-0-2024-39494)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:20 – Updated: 2026-08-05 11:33
VLAI
Title
ima: Fix use-after-free on a dentry's dname.name
Summary
In the Linux kernel, the following vulnerability has been resolved: ima: Fix use-after-free on a dentry's dname.name ->d_name.name can change on rename and the earlier value can be freed; there are conditions sufficient to stabilize it (->d_lock on dentry, ->d_lock on its parent, ->i_rwsem exclusive on the parent's inode, rename_lock), but none of those are met at any of the sites. Take a stable snapshot of the name instead.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2fe5d6def1672ae6635dd71867bf36dcfaa7434b , < 480afcbeb7aaaa22677d3dd48ec590b441eaac1a (git)
Affected: 2fe5d6def1672ae6635dd71867bf36dcfaa7434b , < edf287bc610b18d7a9c0c0c1cb2e97b9348c71bb (git)
Affected: 2fe5d6def1672ae6635dd71867bf36dcfaa7434b , < 0b31e28fbd773aefb6164687e0767319b8199829 (git)
Affected: 2fe5d6def1672ae6635dd71867bf36dcfaa7434b , < 7fb374981e31c193b1152ed8d3b0a95b671330d4 (git)
Affected: 2fe5d6def1672ae6635dd71867bf36dcfaa7434b , < dd431c3ac1fc34a9268580dd59ad3e3c76b32a8c (git)
Affected: 2fe5d6def1672ae6635dd71867bf36dcfaa7434b , < a78a6f0da57d058e2009e9958fdcef66f165208c (git)
Affected: 2fe5d6def1672ae6635dd71867bf36dcfaa7434b , < be84f32bb2c981ca670922e047cdde1488b233de (git)
Create a notification for this product.
Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 5.4.291 , ≤ 5.4.* (semver)
Unaffected: 5.10.235 , ≤ 5.10.* (semver)
Unaffected: 5.15.174 , ≤ 5.15.* (semver)
Unaffected: 6.1.97 , ≤ 6.1.* (semver)
Unaffected: 6.6.35 , ≤ 6.6.* (semver)
Unaffected: 6.9.6 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T18:47:45+00:00",
      "cve": "CVE-2024-39494",
      "id": "CVE-2024-39494",
      "initial_release_date": "2024-07-12T00:00:00+00:00",
      "product_status:known_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ima: Fix use-after-free on a dentry\u0027s dname.name",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-39494.json",
      "version": "3"
    },
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      "cveMetadata": "{\"cveId\": \"CVE-2024-39494\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-21T09:12:47.376Z\", \"dateReserved\": \"2024-06-25T14:23:23.748Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:20:30.348Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.