CVE-2025-40103

{
  "id": "CVE-2025-40103",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-10-30T10:15:34.693",
  "lastModified": "2026-10-19T21:10:00.160",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: Fix refcount leak for cifs_sb_tlink\n\nFix three refcount inconsistency issues related to `cifs_sb_tlink`.\n\nComments for `cifs_sb_tlink` state that `cifs_put_tlink()` needs to be\ncalled after successful calls to `cifs_sb_tlink()`. Three calls fail to\nupdate refcount accordingly, leading to possible resource leaks."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:\n\nsmb: cliente: Corrección de fuga de contador de referencias para cifs_sb_tlink\n\nCorrige tres problemas de inconsistencia del contador de referencias relacionados con 'cifs_sb_tlink'.\n\nLos comentarios para 'cifs_sb_tlink' indican que se debe llamar a 'cifs_put_tlink()' después de llamadas exitosas a 'cifs_sb_tlink()'. Tres llamadas no actualizan el contador de referencias en consecuencia, lo que lleva a posibles fugas de recursos."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "fs/smb/client/inode.c",
            "fs/smb/client/smb2ops.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "8ceb984379462f94bdebef3288d569c6e1f912ea",
              "lessThan": "d3c8ea197055c260119a13360e8202a27e53e1e4",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "8ceb984379462f94bdebef3288d569c6e1f912ea",
              "lessThan": "790282abe9d805f08618c1c24ea2529e7259b692",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "8ceb984379462f94bdebef3288d569c6e1f912ea",
              "lessThan": "d7dd034c14928306db1b46be277ae439b84dacf9",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "8ceb984379462f94bdebef3288d569c6e1f912ea",
              "lessThan": "e15605b68b490186da2ad8029c0351a9cfb0b9af",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "8ceb984379462f94bdebef3288d569c6e1f912ea",
              "lessThan": "896bb31e1416f582503db1350cf1bd10dc64e5a6",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "8ceb984379462f94bdebef3288d569c6e1f912ea",
              "lessThan": "c2b77f42205ef485a647f62082c442c1cd69d3fc",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "fs/smb/client/inode.c",
            "fs/smb/client/smb2ops.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "3.7",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "3.7",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.15.203",
              "lessThanOrEqual": "5.15.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.158",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.114",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.55",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.17.5",
              "lessThanOrEqual": "6.17.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/790282abe9d805f08618c1c24ea2529e7259b692",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/896bb31e1416f582503db1350cf1bd10dc64e5a6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c2b77f42205ef485a647f62082c442c1cd69d3fc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d3c8ea197055c260119a13360e8202a27e53e1e4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d7dd034c14928306db1b46be277ae439b84dacf9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e15605b68b490186da2ad8029c0351a9cfb0b9af",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}