GHSA-V5FG-WC2F-7H9H

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

smb: client: Fix next buffer leak in receive_encrypted_standard()

receive_encrypted_standard() allocates next_buffer before checking whether the number of compound PDUs already reached MAX_COMPOUND. If the limit check fails, the function returns immediately and the newly allocated next_buffer is not assigned to server->smallbuf/server->bigbuf, making it leaked.

Move the MAX_COMPOUND check before allocating next_buffer.

Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-64381"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:21Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: Fix next buffer leak in receive_encrypted_standard()\n\nreceive_encrypted_standard() allocates next_buffer before checking\nwhether the number of compound PDUs already reached MAX_COMPOUND. If\nthe limit check fails, the function returns immediately and the newly\nallocated next_buffer is not assigned to server-\u003esmallbuf/server-\u003ebigbuf,\nmaking it leaked.\n\nMove the MAX_COMPOUND check before allocating next_buffer.",
  "id": "GHSA-v5fg-wc2f-7h9h",
  "modified": "2026-07-25T12:31:33Z",
  "published": "2026-07-25T12:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64381"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07e0ab81df1790afa35732a4e8e07ff831b29008"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c6267a1d5cf4c73b656f8181b310cbbb3e4767b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/297243e365fc9fe2f8e9b7dd535a65d922cd108b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67097772df7791c53d608f04bd31c676ccf79b83"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68fc0b6cc03ca58060c0f36454e169f5fe258974"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9136a08dc29328edd9867f2545e73906ac9df93b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/927d4805aea0a287d36dd4f826ee24d69a2afee3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94e4f672db029414b9888b5137a7559f1febf2d8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.