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CVE-2025-21955

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent connection release during oplock break notification ksmbd_work could be freed when after connection release. Increment r_count of ksmbd_conn to indicate that requests are not finished yet and to not release the connection.

Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-04-01 16:15:26.710000
Last modified
2026-10-30 13:17:54.560000
View original CVE JSON
{
  "id": "CVE-2025-21955",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-04-01T16:15:26.710",
  "lastModified": "2026-10-30T13:17:54.560",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: prevent connection release during oplock break notification\n\nksmbd_work could be freed when after connection release.\nIncrement r_count of ksmbd_conn to indicate that requests\nare not finished yet and to not release the connection."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: impide la liberación de la conexión durante la notificación de interrupción del bloqueo de oplock. ksmbd_work podría liberarse después de la liberación de la conexión. Incremente r_count de ksmbd_conn para indicar que las solicitudes aún no han finalizado y para no liberar la conexión."
    }
  ],
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      "affectedData": [
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            "fs/smb/server/connection.c",
            "fs/smb/server/connection.h",
            "fs/smb/server/oplock.c",
            "fs/smb/server/server.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "version": "6.14",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
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