FKIE_CVE-2025-38431

Vulnerability from fkie_nvd - Published: 2025-07-25 15:15 - Updated: 2025-11-19 19:01
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix regression with native SMB symlinks Some users and customers reported that their backup/copy tools started to fail when the directory being copied contained symlink targets that the client couldn't parse - even when those symlinks weren't followed. Fix this by allowing lstat(2) and readlink(2) to succeed even when the client can't resolve the symlink target, restoring old behavior.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ddaf7567080c7de2e0c99efca2ee1e6b79beea5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ff8abbd248c1f52df0c321690b88454b13ff54b2Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 6.16
linux linux_kernel 6.16
linux linux_kernel 6.16
To clipboard 

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  "descriptions": [
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix regression with native SMB symlinks\n\nSome users and customers reported that their backup/copy tools started\nto fail when the directory being copied contained symlink targets that\nthe client couldn\u0027t parse - even when those symlinks weren\u0027t followed.\n\nFix this by allowing lstat(2) and readlink(2) to succeed even when the\nclient can\u0027t resolve the symlink target, restoring old behavior."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: cliente: corregir regresi\u00f3n con enlaces simb\u00f3licos SMB nativos. Algunos usuarios y clientes informaron que sus herramientas de copia de seguridad/copia comenzaban a fallar cuando el directorio copiado conten\u00eda enlaces simb\u00f3licos que el cliente no pod\u00eda analizar, incluso si no se segu\u00edan. Para solucionar esto, permita que lstat(2) y readlink(2) funcionen correctamente incluso cuando el cliente no pueda resolver el enlace simb\u00f3lico, restaurando as\u00ed el comportamiento anterior."
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  "id": "CVE-2025-38431",
  "lastModified": "2025-11-19T19:01:08.917",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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        "impactScore": 3.6,
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  "published": "2025-07-25T15:15:28.133",
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