ghsa-2829-fqm4-jgr9
Vulnerability from github
Published
2025-10-15 09:30
Modified
2025-10-15 09:30
Details

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

octeontx2-pf: Fix potential use after free in otx2_tc_add_flow()

This code calls kfree_rcu(new_node, rcu) and then dereferences "new_node" and then dereferences it on the next line. Two lines later, we take a mutex so I don't think this is an RCU safe region. Re-order it to do the dereferences before queuing up the free.

Show details on source website

To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2025-39978"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-15T08:15:35Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: Fix potential use after free in otx2_tc_add_flow()\n\nThis code calls kfree_rcu(new_node, rcu) and then dereferences \"new_node\"\nand then dereferences it on the next line.  Two lines later, we take\na mutex so I don\u0027t think this is an RCU safe region.  Re-order it to do\nthe dereferences before queuing up the free.",
  "id": "GHSA-2829-fqm4-jgr9",
  "modified": "2025-10-15T09:30:17Z",
  "published": "2025-10-15T09:30:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39978"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5723120423a753a220b8b2954b273838b9d7e74a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8a63f27c3a8a3714210d32b12fd0f16d0337414"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c41b2941a024d4ec7c768e16ffb10a74b188fced"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9c70e93ec5988ab07ad2a92d9f9d12867f02c56"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df2c071061ed52d2225d97b212d27ecedf456b8a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.