CVE-2023-53662

Full vulnerability record from the local CVENow database.
Description

In the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup} If the filename casefolding fails, we'll be leaking memory from the fscrypt_name struct, namely from the 'crypto_buf.name' member. Make sure we free it in the error path on both ext4_fname_setup_filename() and ext4_fname_prepare_lookup() functions.
Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-10-07 16:15:49.927000
Last modified
2026-10-28 20:10:00.163000
View original CVE JSON
{
  "id": "CVE-2023-53662",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-10-07T16:15:49.927",
  "lastModified": "2026-10-28T20:10:00.163",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}\n\nIf the filename casefolding fails, we'll be leaking memory from the\nfscrypt_name struct, namely from the 'crypto_buf.name' member.\n\nMake sure we free it in the error path on both ext4_fname_setup_filename()\nand ext4_fname_prepare_lookup() functions."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\next4: corrige fugas de memoria en ext4_fname_{setup_filename,prepare_lookup}\n\nSi el plegado de mayúsculas y minúsculas del nombre de archivo falla, estaremos fugando memoria de la estructura fscrypt_name, específicamente del miembro ’crypto_buf.name’.\n\nAsegurémonos de liberarla en la ruta de error en ambas funciones ext4_fname_setup_filename() y ext4_fname_prepare_lookup()."
    }
  ],
  "affected": [
    {
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      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "fs/ext4/crypto.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
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          "programFiles": [
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              "versionType": "original_commit_for_fix",
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  "metrics": {
    "cvssMetricV31": [
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
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        "exploitabilityScore": 1.8,
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  "weaknesses": [
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      "type": "Primary",
      "description": [
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