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CriticalFix available

cifs: Fix oops due to uninitialised variable

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix oops due to uninitialised variable Fix smb3_init_transform_rq() to initialise buffer to NULL before calling netfs_alloc_folioq_buffer() as netfs assumes it can append to the buffer it is given. Setting it to NULL means it should start a fresh buffer, but the value is currently undefined.

Products
Kernel
Affected versions
Not specified
Fixed versions
6.12.44, 6.16.4
CVEs
CVE-2025-38737
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 14:31 UTC · Revision 1

Source evidence

cifs: Fix oops due to uninitialised variable

core-osv · Original source

Published 5 Sept 2025, 17:20 UTC

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix oops due to uninitialised variable Fix smb3_init_transform_rq() to initialise buffer to NULL before calling netfs_alloc_folioq_buffer() as netfs assumes it can append to the buffer it is given. Setting it to NULL means it should start a fresh buffer, but the value is currently undefined.

osv:CVE-2025-38737

Kernel

Fixed versions: 6.12.44, 6.16.4

Complete source record
{
  "id": "929204cd5fb085a0e6762a4d30a721d1e9750e95507bba0085289919083b41dc",
  "url": "https://osv.dev/vulnerability/CVE-2025-38737",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "cifs: Fix oops due to uninitialised variable",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: cifs: Fix oops due to uninitialised variable Fix smb3_init_transform_rq() to initialise buffer to NULL before calling netfs_alloc_folioq_buffer() as netfs assumes it can append to the buffer it is given. Setting it to NULL means it should start a fresh buffer, but the value is currently undefined.",
    "evidence": "osv:CVE-2025-38737",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.44",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.16.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2025-38737",
      "aliases": [
        "CVE-2025-38737"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a2906d3316fc19bf0ade84618bb73eab604c447e"
                },
                {
                  "fixed": "4931fe2dbe1cc0e7d350a4b51b0b330e43971d98"
                },
                {
                  "fixed": "6adaa9fae36f848afa7278945d725e197e33c496"
                },
                {
                  "fixed": "453a6d2a68e54a483d67233c6e1e24c4095ee4be"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38737.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.12.0"
                },
                {
                  "fixed": "6.12.44"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.16.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38737.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.508768910Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/453a6d2a68e54a483d67233c6e1e24c4095ee4be",
        "https://git.kernel.org/stable/c/4931fe2dbe1cc0e7d350a4b51b0b330e43971d98",
        "https://git.kernel.org/stable/c/6adaa9fae36f848afa7278945d725e197e33c496",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38737.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38737",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38737.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38737",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496399,
  "published_at": "2025-09-05T17:20:37.719+00:00"
}