github - ghsa-68wc-qrqf-rfh5

GHSA-68WC-QRQF-RFH5

Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2025-11-14 18:31

Details

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

ksmbd: fix use-after-free in smb_break_all_levII_oplock()

There is a room in smb_break_all_levII_oplock that can cause racy issues when unlocking in the middle of the loop. This patch use read lock to protect whole loop.

Severity ?

7.0 (High)


                  
                    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-37776"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T14:15:41Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix use-after-free in smb_break_all_levII_oplock()\n\nThere is a room in smb_break_all_levII_oplock that can cause racy issues\nwhen unlocking in the middle of the loop. This patch use read lock\nto protect whole loop.",
  "id": "GHSA-68wc-qrqf-rfh5",
  "modified": "2025-11-14T18:31:18Z",
  "published": "2025-05-01T15:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37776"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18b4fac5ef17f77fed9417d22210ceafd6525fc7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/296cb5457cc6f4a754c4ae29855f8a253d52bcc6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d54ab1520d43e95f9b2e22d7a05fc9614192e5a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d73686367ad68534257cd88a36ca3c52cb8b81d8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-37776 (GCVE-0-2025-37776)

Vulnerability from cvelistv5 – Published: 2025-05-01 13:07 – Updated: 2025-05-26 05:20

Summary

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_break_all_levII_oplock() There is a room in smb_break_all_levII_oplock that can cause racy issues when unlocking in the middle of the loop. This patch use read lock to protect whole loop.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/296cb5457cc6f4a75…
	https://git.kernel.org/stable/c/d54ab1520d43e95f9…
	https://git.kernel.org/stable/c/d73686367ad685342…
	https://git.kernel.org/stable/c/18b4fac5ef17f77fe…

Impacted products

Vendor

Product

Version

Linux

Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 296cb5457cc6f4a754c4ae29855f8a253d52bcc6 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < d54ab1520d43e95f9b2e22d7a05fc9614192e5a5 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < d73686367ad68534257cd88a36ca3c52cb8b81d8 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 18b4fac5ef17f77fed9417d22210ceafd6525fc7 (git)

Linux

Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 6.6.88 , ≤ 6.6.* (semver)
Unaffected: 6.12.25 , ≤ 6.12.* (semver)
Unaffected: 6.14.4 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/oplock.c",
            "fs/smb/server/oplock.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "296cb5457cc6f4a754c4ae29855f8a253d52bcc6",
              "status": "affected",
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "versionType": "git"
            },
            {
              "lessThan": "d54ab1520d43e95f9b2e22d7a05fc9614192e5a5",
              "status": "affected",
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "versionType": "git"
            },
            {
              "lessThan": "d73686367ad68534257cd88a36ca3c52cb8b81d8",
              "status": "affected",
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "versionType": "git"
            },
            {
              "lessThan": "18b4fac5ef17f77fed9417d22210ceafd6525fc7",
              "status": "affected",
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/oplock.c",
            "fs/smb/server/oplock.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.88",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.25",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.88",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.25",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.4",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix use-after-free in smb_break_all_levII_oplock()\n\nThere is a room in smb_break_all_levII_oplock that can cause racy issues\nwhen unlocking in the middle of the loop. This patch use read lock\nto protect whole loop."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-26T05:20:38.759Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/296cb5457cc6f4a754c4ae29855f8a253d52bcc6"
        },
        {
          "url": "https://git.kernel.org/stable/c/d54ab1520d43e95f9b2e22d7a05fc9614192e5a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/d73686367ad68534257cd88a36ca3c52cb8b81d8"
        },
        {
          "url": "https://git.kernel.org/stable/c/18b4fac5ef17f77fed9417d22210ceafd6525fc7"
        }
      ],
      "title": "ksmbd: fix use-after-free in smb_break_all_levII_oplock()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37776",
    "datePublished": "2025-05-01T13:07:14.998Z",
    "dateReserved": "2025-04-16T04:51:23.939Z",
    "dateUpdated": "2025-05-26T05:20:38.759Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-68WC-QRQF-RFH5

CVE-2025-37776 (GCVE-0-2025-37776)

Tags

Sightings

Nomenclature