GHSA-926H-7QF4-C3HQ

Vulnerability from github – Published: 2025-07-25 15:30 – Updated: 2025-12-15 18:30
VLAI?
Details

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

btrfs: fix iteration of extrefs during log replay

At __inode_add_ref() when processing extrefs, if we jump into the next label we have an undefined value of victim_name.len, since we haven't initialized it before we did the goto. This results in an invalid memory access in the next iteration of the loop since victim_name.len was not initialized to the length of the name of the current extref.

Fix this by initializing victim_name.len with the current extref's name length.

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-2025-38382"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-908"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-25T13:15:27Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix iteration of extrefs during log replay\n\nAt __inode_add_ref() when processing extrefs, if we jump into the next\nlabel we have an undefined value of victim_name.len, since we haven\u0027t\ninitialized it before we did the goto. This results in an invalid memory\naccess in the next iteration of the loop since victim_name.len was not\ninitialized to the length of the name of the current extref.\n\nFix this by initializing victim_name.len with the current extref\u0027s name\nlength.",
  "id": "GHSA-926h-7qf4-c3hq",
  "modified": "2025-12-15T18:30:16Z",
  "published": "2025-07-25T15:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38382"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2d11d274e2e1d7c79e2ca8461ce3ff3a95c11171"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/539969fc472886a1d63565459514d47e27fef461"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54a7081ed168b72a8a2d6ef4ba3a1259705a2926"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ac790dc2ba00499a8d671d4a24de4d4ad27e234"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aee57a0293dca675637e5504709f9f8fd8e871be"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "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"
    }
  ]
}


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