GHSA-G2PF-697J-2R49

Vulnerability from github – Published: 2025-12-09 03:31 – Updated: 2025-12-09 03:31
VLAI?
Details

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

f2fs: fix information leak in f2fs_move_inline_dirents()

When converting an inline directory to a regular one, f2fs is leaking uninitialized memory to disk because it doesn't initialize the entire directory block. Fix this by zero-initializing the block.

This bug was introduced by commit 4ec17d688d74 ("f2fs: avoid unneeded initializing when converting inline dentry"), which didn't consider the security implications of leaking uninitialized memory to disk.

This was found by running xfstest generic/435 on a KMSAN-enabled kernel.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53796"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-09T01:16:51Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix information leak in f2fs_move_inline_dirents()\n\nWhen converting an inline directory to a regular one, f2fs is leaking\nuninitialized memory to disk because it doesn\u0027t initialize the entire\ndirectory block.  Fix this by zero-initializing the block.\n\nThis bug was introduced by commit 4ec17d688d74 (\"f2fs: avoid unneeded\ninitializing when converting inline dentry\"), which didn\u0027t consider the\nsecurity implications of leaking uninitialized memory to disk.\n\nThis was found by running xfstest generic/435 on a KMSAN-enabled kernel.",
  "id": "GHSA-g2pf-697j-2r49",
  "modified": "2025-12-09T03:31:11Z",
  "published": "2025-12-09T03:31:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53796"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/00b5587326625d0fddb2a5f5a3d4acd950102ace"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/117d4f6687b1f74423b5d398ea95c63b262a8e73"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2bef8314fcf94ddc27e22d03f237c0fafd00de33"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a5571cff4ffcfc24847df9fd545cc5799ac0ee5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6807ef0f3b3d8508d3b07a2e35de8a91820a014"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eebaecef0095bb8f493c03982da75c6e7bae1056"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f07a8d61b6ea81bb3cbe0638af40f8824d6147fd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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