{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-53396",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-53396"
  ],
  "published": "2025-09-18T13:36:23Z",
  "summary": "ubifs: Fix memory leak in do_rename",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix memory leak in do_rename\n\nIf renaming a file in an encrypted directory, function\nfscrypt_setup_filename allocates memory for a file name. This name is\nnever used, and before returning to the caller the memory for it is not\nfreed.\n\nWhen running kmemleak on it we see that it is registered as a leak. The\nreport below is triggered by a simple program 'rename' that renames a\nfile in an encrypted directory:\n\n  unreferenced object 0xffff888101502840 (size 32):\n    comm \"rename\", pid 9404, jiffies 4302582475 (age 435.735s)\n    backtrace:\n      __kmem_cache_alloc_node\n      __kmalloc\n      fscrypt_setup_filename\n      do_rename\n      ubifs_rename\n      vfs_rename\n      do_renameat2\n\nTo fix this we can remove the call to fscrypt_setup_filename as it's not\nneeded.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.21-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v6",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7l",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v8",
            "binary_version": "1:6.1.21-1+rpt1"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.21-1+rpt1": {
            "linux_commit": "0afb5e98488aed7017b9bf321b575d0177feb7ed",
            "upstream_version": "6.1.21",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.28"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-53396"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/43b2f7d690697182beed6f71aa57b7249d3cfc9c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9f565752b328fe53c9e42b7d4e4d89a1da63d738"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7e264f67b7d6580eff5c2696961039fd05c69258"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/517ddc0259d7a7231486bdafde8035c478bc4088"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3a36d20e012903f45714df2731261fdefac900cb"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}